teplovoz
Эти адреса по IPv6 , в настройках соединения смотри вкладку - Параметры IPv6 , ниже в способах настройки выбери - игнорировать и сохрани .
У меня проблема. Когда я что-то пытаюсь настроить в GUI, эти настройки не сохраняются. То бишь, я жму Ок, а когда снова их открываю - там всё по умолчанию. Использую plasma-nm.
#### M3B1US LVM C4SC4D3 DOUBL3 R34CH4ROUND ####
Перечитав лог и перепроверив ещё раз, заметил интересную деталь. Есть момент после перевтыкания, когда resolv.conf не обновлённый и порядок правильный. Я увидел, удивился, набрал cat ещё раз, а он уже поменялся.
#### M3B1US LVM C4SC4D3 DOUBL3 R34CH4ROUND ####
RusWolf
Torchwood01, ты уже в настройках NM определись, по IPv4 или по IPv6 нужно тебе подключение.
У тебя сейчас по двум протоколам шпарит.

Кажется, и правда в этом проблема. Могу предположить, что два протокола конфликтуют. Потому что когда в resolv сверху ipv6-адреса - всё работает, а когда сверху ipv4 - падает.
Только вот я только что вкрутил NetwokManager принудительный ipv6, а он продолжает пихать ipv4... где не так сделал?

[[email protected] ~][[email protected] ~]$ sudo cat /etc/resolv.conf
# Generated by resolvconf
nameserver 2a02:2168:208:1::1
nameserver 2a02:2168:208:2::1
nameserver 77.37.251.33
nameserver 77.37.255.30
nameserver 192.168.1.1
[[email protected] ~]$ ping 8.8.8.8
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_seq=1 ttl=56 time=3.42 ms
64 bytes from 8.8.8.8: icmp_seq=2 ttl=56 time=3.53 ms
^C
--- 8.8.8.8 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1001ms
rtt min/avg/max/mdev = 3.428/3.481/3.534/0.053 ms
[[email protected] ~]$ sudo cat /etc/resolv.conf
# Generated by resolvconf
nameserver 2a02:2168:208:1::1
nameserver 2a02:2168:208:2::1
nameserver 77.37.251.33
nameserver 77.37.255.30
nameserver 192.168.1.1
[[email protected] ~]$ sudo cat /etc/resolv.conf
# Generated by resolvconf
nameserver 77.37.251.33
nameserver 77.37.255.30
nameserver 192.168.1.1
nameserver 2a02:2168:208:1::1
nameserver 2a02:2168:208:2::1
[[email protected] ~]$ ^C
[[email protected] ~]$ ping 8.8.8.8
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
From 192.168.1.108 icmp_seq=1 Destination Host Unreachable
^C
--- 8.8.8.8 ping statistics ---
5 packets transmitted, 0 received, +1 errors, 100% packet loss, time 4013ms
pipe 3
[[email protected] ~]$

NetworkManager.conf
# Configuration file for NetworkManager.
# See "man 5 NetworkManager.conf" for details.
[main]
plugins=ifupdown,keyfile

[ifupdown]
managed=true

[connection]
ipv6.ip6-privacy=2

[connectivity]
uri=google.com
interval=60
response=Google


Конфиг соединения:
[connection]
id=Wired connection 1
uuid=b95f3863-57e1-3b2d-8cee-3d1df21012ec
type=ethernet
autoconnect-priority=-100
permissions=

[ethernet]
mac-address=B0:5A:DA:F0:CA:EF
mac-address-blacklist=

[ipv6]
addr-gen-mode=stable-privacy
dns-search=
method=auto
ip6-privacy=2

#### M3B1US LVM C4SC4D3 DOUBL3 R34CH4ROUND ####
teplovoz
Torchwood01
cat /usr/bin/resolvconf
Не то , вот этот смотри -
cat /etc/resolv.conf

Тогда вот такие преображения.

Сеть работает:
[[email protected] ~]$ sudo cat /etc/resolv.conf
# Generated by resolvconf
nameserver 2a02:2168:208:1::1
nameserver 2a02:2168:208:2::1
nameserver 77.37.251.33
nameserver 77.37.255.30
nameserver 192.168.1.1
[[email protected] ~]$

Провод выдернут (с интервалом в пару секунд):
[[email protected] ~]$ sudo cat /etc/resolv.conf
# Generated by resolvconf
nameserver 77.37.251.33
nameserver 77.37.255.30
nameserver 192.168.1.1
nameserver 2a02:2168:208:1::1
nameserver 2a02:2168:208:2::1
[[email protected] ~]$ sudo cat /etc/resolv.conf
nameserver 8.8.8.8
nameserver 8.8.8.8

Провод вставлен обратно, сеть не работает:
[[email protected] ~]$ sudo cat /etc/resolv.conf
# Generated by resolvconf
nameserver 77.37.251.33
nameserver 77.37.255.30
nameserver 192.168.1.1
nameserver 2a02:2168:208:1::1
nameserver 2a02:2168:208:2::1

Сеть отключена в GUI:
[[email protected] ~]$ sudo cat /etc/resolv.conf
# Generated by resolvconf
nameserver 2a02:2168:208:1::1
nameserver 2a02:2168:208:2::1

Сеть включена в GUI обратно, работает:
[[email protected] ~]$ sudo cat /etc/resolv.conf
# Generated by resolvconf
nameserver 2a02:2168:208:1::1
nameserver 2a02:2168:208:2::1
nameserver 77.37.251.33
nameserver 77.37.255.30
nameserver 192.168.1.1
[[email protected] ~]$
#### M3B1US LVM C4SC4D3 DOUBL3 R34CH4ROUND ####
bitrixbiz
А спустя какое время после перетыкания ты пытаешься достучаться до хостов? У тебя интервал переподключения стоит 1 минута.
Пытался и через минуту, и через две и через несколько секунд и сразу после втыкания. Абсолютно индефферентно.

teplovoz
Cмотри что есть в resolv.conf , возможно не генерируются DNS .
В резолве вот такая громада. К тому же, подключиться не может именно по ip. Были проблемы с http адрессами (а значит - DNS), как починил - хоть убейте, не вспомню.
[[email protected] /]$ cat /usr/bin/resolvconf
#!/bin/sh
# Copyright (c) 2007-2016 Roy Marples
# All rights reserved

# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#     * Redistributions of source code must retain the above copyright
#       notice, this list of conditions and the following disclaimer.
#     * Redistributions in binary form must reproduce the above
#       copyright notice, this list of conditions and the following
#       disclaimer in the documentation and/or other materials provided
#       with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

RESOLVCONF="$0"
OPENRESOLV_VERSION="3.9.0"
SYSCONFDIR=/etc
LIBEXECDIR=/usr/lib/resolvconf
VARDIR=/run/resolvconf
RCDIR=
RESTARTCMD=

if [ "$1" = "--version" ]; then
        echo "openresolv $OPENRESOLV_VERSION"
        echo "Copyright (c) 2007-2016 Roy Marples"
        exit 0
fi

# Disregard dhcpcd setting
unset interface_order state_dir

# If you change this, change the test in VFLAG and libc.in as well
local_nameservers="127.* 0.0.0.0 255.255.255.255 ::1"

dynamic_order="tap[0-9]* tun[0-9]* vpn vpn[0-9]* ppp[0-9]* ippp[0-9]*"
interface_order="lo lo[0-9]*"
name_server_blacklist="0.0.0.0"

# Support original resolvconf configuration layout
# as well as the openresolv config file
if [ -f "$SYSCONFDIR"/resolvconf.conf ]; then
        . "$SYSCONFDIR"/resolvconf.conf
        [ -n "$state_dir" ] && VARDIR="$state_dir"
elif [ -d "$SYSCONFDIR/resolvconf" ]; then
        SYSCONFDIR="$SYSCONFDIR/resolvconf"
        if [ -f "$SYSCONFDIR"/interface-order ]; then
                interface_order="$(cat "$SYSCONFDIR"/interface-order)"
        fi
fi
IFACEDIR="$VARDIR/interfaces"
METRICDIR="$VARDIR/metrics"
PRIVATEDIR="$VARDIR/private"
EXCLUSIVEDIR="$VARDIR/exclusive"
LOCKDIR="$VARDIR/lock"
_PWD="$PWD"

warn()
{
        echo "$*" >&2
}

error_exit()
{
        echo "$*" >&2
        exit 1
}

usage()
{
        cat <<-EOF
        Usage: ${RESOLVCONF##*/} [options] command [argument]

        Inform the system about any DNS updates.

        Commands:
          -a \$INTERFACE    Add DNS information to the specified interface
                           (DNS supplied via stdin in resolv.conf format)
          -d \$INTERFACE    Delete DNS information from the specified interface
          -h               Show this help cruft
          -i [\$PATTERN]    Show interfaces that have supplied DNS information
                   optionally from interfaces that match the specified
                   pattern
          -l [\$PATTERN]    Show DNS information, optionally from interfaces
                           that match the specified pattern

          -u               Run updates from our current DNS information
          --version        Echo the ${RESOLVCONF##*/} version

        Options:
          -f               Ignore non existent interfaces
          -m metric        Give the added DNS information a metric
          -p               Mark the interface as private
          -x               Mark the interface as exclusive

        Subscriber and System Init Commands:
          -I               Init the state dir
          -r \$SERVICE      Restart the system service
                           (restarting a non-existent or non-running service
                            should have no output and return 0)
          -R               Show the system service restart command
          -v [\$PATTERN]    echo NEWDOMAIN, NEWSEARCH and NEWNS variables to
                           the console
          -V [\$PATTERN]    Same as -v, but only uses configuration in
                           $SYSCONFDIR/resolvconf.conf
        EOF
        [ -z "$1" ] && exit 0
        echo
        error_exit "$*"
}

# Strip any trailing dot from each name as a FQDN does not belong
# in resolv.conf(5)
# If you think otherwise, capture a DNS trace and you'll see libc
# will strip it regardless.
# This also solves setting up duplicate zones in our subscribers.
strip_trailing_dots()
{
        local n= d=

        for n; do
                printf "$d%s" "${n%.}"
                d=" "
        done
        printf "\n"
}

private_iface()
{
        local p

        # Allow expansion
        cd "$IFACEDIR"

        # Public interfaces override private ones.
        for p in $public_interfaces; do
                case "$iface" in
                "$p"|"$p":*) return 1;;
                esac
        done

        if [ -e "$PRIVATEDIR/$iface" ]; then
                return 0
        fi

        for p in $private_interfaces; do
                case "$iface" in
                "$p"|"$p":*) return 0;;
                esac
        done

        # Not a private interface
        return 1
}

# Parse resolv.conf's and make variables
# for domain name servers, search name servers and global nameservers
parse_resolv()
{
        local line= ns= ds= search= d= n= newns=
        local new=true iface= private=false p= domain= l= islocal=

        newns=

        while read -r line; do
                case "$line" in
                "# resolv.conf from "*)
                        if ${new}; then
                                iface="${line#\# resolv.conf from *}"
                                new=false
                                if private_iface "$iface"; then
                                        private=true
                                else
                                        private=false
                                fi
                        fi
                        ;;
                "nameserver "*)
                        islocal=false
                        for l in $local_nameservers; do
                                case "${line#* }" in
                                $l)
                                        islocal=true
                                        echo "LOCALNAMESERVERS=\"\$LOCALNAMESERVERS ${line#* }\""
                                        break
                                        ;;
                                esac
                        done
                        $islocal || ns="$ns${line#* } "
                        ;;
                "domain "*)
                        search="$(strip_trailing_dots ${line#* })"
                        if [ -z "$domain" ]; then
                                domain="$search"
                                echo "DOMAIN=\"$domain\""
                        fi
                        ;;
                "search "*)
                        search="$(strip_trailing_dots ${line#* })"
                        ;;
                *)
                        [ -n "$line" ] && continue
                        if [ -n "$ns" -a -n "$search" ]; then
                                newns=
                                for n in $ns; do
                                        newns="$newns${newns:+,}$n"
                                done
                                ds=
                                for d in $search; do
                                        ds="$ds${ds:+ }$d:$newns"
                                done
                                echo "DOMAINS=\"\$DOMAINS $ds\""
                        fi
                        echo "SEARCH=\"\$SEARCH $search\""
                        if ! $private; then
                                echo "NAMESERVERS=\"\$NAMESERVERS $ns\""
                        fi
                        ns=
                        search=
                        new=true
                        ;;
                esac
        done
}

uniqify()
{
        local result=
        while [ -n "$1" ]; do
                case " $result " in
                *" $1 "*);;
                *) result="$result $1";;
                esac
                shift
        done
        echo "${result# *}"
}

dirname()
{
        local dir= OIFS="$IFS"
        local IFS=/
        set -- [email protected]
        IFS="$OIFS"
        if [ -n "$1" ]; then
                printf %s .
        else
                shift
        fi
        while [ -n "$2" ]; do
                printf "/%s" "$1"
                shift
        done
        printf "\n"
}

config_mkdirs()
{
        local e=0 f d
        for f; do
                [ -n "$f" ] || continue
                d="$(dirname "$f")"
                if [ ! -d "$d" ]; then
                        if type install >/dev/null 2>&1; then
                                install -d "$d" || e=$?
                        else
                                mkdir "$d" || e=$?
                        fi
                fi
        done
        return $e
}

# With the advent of alternative init systems, it's possible to have
# more than one installed. So we need to try and guess what one we're
# using unless overriden by configure.
# Note that restarting a service is a last resort - the subscribers
# should make a reasonable attempt to reconfigre the service via some
# method, normally SIGHUP.
detect_init()
{
        [ -n "$RESTARTCMD" ] && return 0

        # Detect the running init system.
        # As systemd and OpenRC can be installed on top of legacy init
        # systems we try to detect them first.
        local status=""
        : ${status:=status}
        if [ -x /bin/systemctl -a -S /run/systemd/private ]; then
                RESTARTCMD="if /bin/systemctl --quiet is-active \$1.service; then
        /bin/systemctl restart \$1.service;
fi"
        elif [ -x /usr/bin/systemctl -a -S /run/systemd/private ]; then
                RESTARTCMD="if /usr/bin/systemctl --quiet is-active \$1.service; then
        /usr/bin/systemctl restart \$1.service;
fi"
        elif [ -x /sbin/rc-service -a \
            -s /libexec/rc/init.d/softlevel -o -s /run/openrc/softlevel ]
        then
                RESTARTCMD="/sbin/rc-service -i \$1 -- -Ds restart"
        elif [ -x /usr/sbin/invoke-rc.d ]; then
                RCDIR=/etc/init.d
                RESTARTCMD="if /usr/sbin/invoke-rc.d --quiet \$1 status 1>/dev/null 2>&1; then
        /usr/sbin/invoke-rc.d \$1 restart;
fi"
        elif [ -x /sbin/service ]; then
                # Old RedHat
                RCDIR=/etc/init.d
                RESTARTCMD="if /sbin/service \$1; then
        /sbin/service \$1 restart;
fi"
        elif [ -x /usr/sbin/service ]; then
                # Could be FreeBSD
                RESTARTCMD="if /usr/sbin/service \$1 $status 1>/dev/null 2>&1; then
        /usr/sbin/service \$1 restart;
fi"
        elif [ -x /bin/sv ]; then
                RESTARTCMD="/bin/sv status \$1 >/dev/null 2>&1 && /bin/sv try-restart \$1"
        elif [ -x /usr/bin/sv ]; then
                RESTARTCMD="/usr/bin/sv status \$1 >/dev/null 2>&1 && /usr/bin/sv try-restart \$1"
        elif [ -e /etc/arch-release -a -d /etc/rc.d ]; then
                RCDIR=/etc/rc.d
                RESTARTCMD="if [ -e /var/run/daemons/\$1 ]; then
        /etc/rc.d/\$1 restart;
fi"
        elif [ -e /etc/slackware-version -a -d /etc/rc.d ]; then
                RESTARTCMD="if /etc/rc.d/rc.\$1 status 1>/dev/null 2>&1; then
        /etc/rc.d/rc.\$1 restart;
fi"
        elif [ -e /etc/rc.d/rc.subr -a -d /etc/rc.d ]; then
                # OpenBSD
                RESTARTCMD="if /etc/rc.d/\$1 check 1>/dev/null 2>&1; then
        /etc/rc.d/\$1 restart;
fi"
        else
                for x in /etc/init.d/rc.d /etc/rc.d /etc/init.d; do
                        [ -d $x ] || continue
                        RESTARTCMD="if $x/\$1 $status 1>/dev/null 2>&1; then
        $x/\$1 restart;
fi"
                        break
                done
        fi

        if [ -z "$RESTARTCMD" ]; then
                if [ "$NOINIT_WARNED" != true ]; then
                        warn "could not detect a useable init system"
                        _NOINIT_WARNED=true
                fi
                return 1
        fi
        _NOINIT_WARNED=
        return 0
}

echo_resolv()
{
        local line= OIFS="$IFS"

        [ -n "$1" -a -f "$IFACEDIR/$1" ] || return 1
        echo "# resolv.conf from $1"
        # Our variable maker works of the fact each resolv.conf per interface
        # is separated by blank lines.
        # So we remove them when echoing them.
        while read -r line; do
                IFS="$OIFS"
                if [ -n "$line" ]; then
                        # We need to set IFS here to preserve any whitespace
                        IFS=''
                        printf "%s\n" "$line"
                fi
        done < "$IFACEDIR/$1"
        IFS="$OIFS"
}

list_resolv()
{
        [ -d "$IFACEDIR" ] || return 0

        local report=false list= retval=0 cmd="$1" excl=
        shift

        case "$IF_EXCLUSIVE" in
        [Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1)
                if [ -d "$EXCLUSIVEDIR" ]; then
                        cd "$EXCLUSIVEDIR"
                        for i in *; do
                                if [ -f "$i" ]; then
                                        list="${i#* }"
                                        break
                                fi
                        done
                fi
                excl=true
                cd "$IFACEDIR"
                for i in $inclusive_interfaces; do
                        if [ -f "$i" -a "$list" = "$i" ]; then
                                list=
                                excl=false
                                break
                        fi
                done
                ;;
        *)
                excl=false
                ;;
        esac

        # If we have an interface ordering list, then use that.
        # It works by just using pathname expansion in the interface directory.
        if [ -n "$1" ]; then
                list="$*"
                $force || report=true
        elif ! $excl; then
                cd "$IFACEDIR"
                for i in $interface_order; do
                        [ -f "$i" ] && list="$list $i"
                        for ii in "$i":* "$i".*; do
                                [ -f "$ii" ] && list="$list $ii"
                        done
                done
                for i in $dynamic_order; do
                        if [ -e "$i" -a ! -e "$METRICDIR/"*" $i" ]; then
                                list="$list $i"
                        fi
                        for ii in "$i":* "$i".*; do
                                if [ -f "$ii" -a ! -e "$METRICDIR/"*" $ii" ]; then
                                        list="$list $ii"
                                fi
                        done
                done
                if [ -d "$METRICDIR" ]; then
                        cd "$METRICDIR"
                        for i in *; do
                                [ -f "$i" ] && list="$list ${i#* }"
                        done
                fi
                list="$list *"
        fi

        cd "$IFACEDIR"
        retval=1
        for i in $(uniqify $list); do
                # Only list interfaces which we really have
                if ! [ -f "$i" ]; then
                        if $report; then
                                echo "No resolv.conf for interface $i" >&2
                                retval=2
                        fi
                        continue
                fi

                if [ "$cmd" = i -o "$cmd" = "-i" ]; then
                        printf %s "$i "
                else
                        echo_resolv "$i" && echo
                fi
                [ $? = 0 -a "$retval" = 1 ] && retval=0
        done
        [ "$cmd" = i -o "$cmd" = "-i" ] && echo
        return $retval
}

list_remove() {
        local list= e= l= result= found= retval=0

        [ -z "$2" ] && return 0
        eval list=\"\$$1\"
        shift

        set -f
        for e; do
                found=false
                for l in $list; do
                        case "$e" in
                        $l) found=true;;
                        esac
                        $found && break
                done
                if $found; then
                        retval=$(($retval + 1))
                else
                        result="$result $e"
                fi
        done
        set +f
        echo "${result# *}"
        return $retval
}

echo_prepend()
{
        echo "# Generated by resolvconf"
        if [ -n "$search_domains" ]; then
                echo "search $search_domains"
        fi
        for n in $name_servers; do
                echo "nameserver $n"
        done
        echo
}

echo_append()
{
        echo "# Generated by resolvconf"
        if [ -n "$search_domains_append" ]; then
                echo "search $search_domains_append"
        fi
        for n in $name_servers_append; do
                echo "nameserver $n"
        done
        echo
}

replace()
{
        local r= k= f= v= val= sub=

        while read -r keyword value; do
                for r in $replace; do
                        k="${r%%/*}"
                        r="${r#*/}"
                        f="${r%%/*}"
                        r="${r#*/}"
                        v="${r%%/*}"
                        case "$keyword" in
                        $k)
                                case "$value" in
                                $f) value="$v";;
                                esac
                                ;;
                        esac
                done
                val=
                for sub in $value; do
                        for r in $replace_sub; do
                                k="${r%%/*}"
                                r="${r#*/}"
                                f="${r%%/*}"
                                r="${r#*/}"
                                v="${r%%/*}"
                                case "$keyword" in
                                $k)
                                        case "$sub" in
                                        $f) sub="$v";;
                                        esac
                                        ;;
                                esac
                        done
                        val="$val${val:+ }$sub"
                done
                printf "%s %s\n" "$keyword" "$val"
        done
}

make_vars()
{
        local newdomains= d= dn= newns= ns=

        # Clear variables
        DOMAIN=
        DOMAINS=
        SEARCH=
        NAMESERVERS=
        LOCALNAMESERVERS=

        if [ -n "$name_servers" -o -n "$search_domains" ]; then
                eval "$(echo_prepend | parse_resolv)"
        fi
        if [ -z "$VFLAG" ]; then
                IF_EXCLUSIVE=1
                list_resolv -i "[email protected]" >/dev/null || IF_EXCLUSIVE=0
                eval "$(list_resolv -l "[email protected]" | replace | parse_resolv)"
        fi
        if [ -n "$name_servers_append" -o -n "$search_domains_append" ]; then
                eval "$(echo_append | parse_resolv)"
        fi

        # Ensure that we only list each domain once
        for d in $DOMAINS; do
                dn="${d%%:*}"
                list_remove domain_blacklist "$dn" >/dev/null || continue
                case " $newdomains" in
                *" ${dn}:"*) continue;;
                esac
                newns=
                for nd in $DOMAINS; do
                        if [ "$dn" = "${nd%%:*}" ]; then
                                ns="${nd#*:}"
                                while [ -n "$ns" ]; do
                                        case ",$newns," in
                                        *,${ns%%,*},*) ;;
                                        *) list_remove name_server_blacklist \
                                                "${ns%%,*}" >/dev/null \
                                        && newns="$newns${newns:+,}${ns%%,*}";;
                                        esac
                                        [ "$ns" = "${ns#*,}" ] && break
                                        ns="${ns#*,}"
                                done
                        fi
                done
                if [ -n "$newns" ]; then
                        newdomains="$newdomains${newdomains:+ }$dn:$newns"
                fi
        done
        DOMAIN="$(list_remove domain_blacklist $DOMAIN)"
        SEARCH="$(uniqify $SEARCH)"
        SEARCH="$(list_remove domain_blacklist $SEARCH)"
        NAMESERVERS="$(uniqify $NAMESERVERS)"
        NAMESERVERS="$(list_remove name_server_blacklist $NAMESERVERS)"
        LOCALNAMESERVERS="$(uniqify $LOCALNAMESERVERS)"
        LOCALNAMESERVERS="$(list_remove name_server_blacklist $LOCALNAMESERVERS)"
        echo "DOMAIN='$DOMAIN'"
        echo "SEARCH='$SEARCH'"
        echo "NAMESERVERS='$NAMESERVERS'"
        echo "LOCALNAMESERVERS='$LOCALNAMESERVERS'"
        echo "DOMAINS='$newdomains'"
}

force=false
VFLAG=
while getopts a:Dd:fhIilm:pRruvVx OPT; do
        case "$OPT" in
        f) force=true;;
        h) usage;;
        m) IF_METRIC="$OPTARG";;
        p) IF_PRIVATE=1;;
        V)
                VFLAG=1
                if [ "$local_nameservers" = \
                    "127.* 0.0.0.0 255.255.255.255 ::1" ]
                then
                        local_nameservers=
                fi
                ;;
        x) IF_EXCLUSIVE=1;;
        '?') ;;
        *) cmd="$OPT"; iface="$OPTARG";;
        esac
done
shift $(($OPTIND - 1))
args="$iface${iface:+ }$*"

# -I inits the state dir
if [ "$cmd" = I ]; then
        if [ -d "$VARDIR" ]; then
                rm -rf "$VARDIR"/*
        fi
        exit $?
fi

# -D ensures that the listed config file base dirs exist
if [ "$cmd" = D ]; then
        config_mkdirs "[email protected]"
        exit $?
fi

# -l lists our resolv files, optionally for a specific interface
if [ "$cmd" = l -o "$cmd" = i ]; then
        list_resolv "$cmd" "$args"
        exit $?
fi

# Restart a service or echo the command to restart a service
if [ "$cmd" = r -o "$cmd" = R ]; then
        detect_init || exit 1
        if [ "$cmd" = r ]; then
                set -- $args
                eval $RESTARTCMD
        else
                echo "$RESTARTCMD"
        fi
        exit $?
fi

# Not normally needed, but subscribers should be able to run independently
if [ "$cmd" = v -o -n "$VFLAG" ]; then
        make_vars "$iface"
        exit $?
fi

# Test that we have valid options
if [ "$cmd" = a -o "$cmd" = d ]; then
        if [ -z "$iface" ]; then
                usage "Interface not specified"
        fi
elif [ "$cmd" != u ]; then
        [ -n "$cmd" -a "$cmd" != h ] && usage "Unknown option $cmd"
        usage
fi

if [ "$cmd" = a ]; then
        for x in '/' \\ ' ' '*'; do
                case "$iface" in
                *[$x]*) error_exit "$x not allowed in interface name";;
                esac
        done
        for x in '.' '-' '~'; do
                case "$iface" in
                [$x]*) error_exit \
                        "$x not allowed at start of interface name";;
                esac
        done
        [ "$cmd" = a -a -t 0 ] && error_exit "No file given via stdin"
fi

if [ ! -d "$VARDIR" ]; then
        if [ -L "$VARDIR" ]; then
                dir="$(readlink "$VARDIR")"
                # link maybe relative
                cd "${VARDIR%/*}"
                if ! mkdir -m 0755 -p "$dir"; then
                        error_exit "Failed to create needed" \
                                "directory $dir"
                fi
        else
                if ! mkdir -m 0755 -p "$VARDIR"; then
                        error_exit "Failed to create needed" \
                                "directory $VARDIR"
                fi
        fi
fi

if [ ! -d "$IFACEDIR" ]; then
        mkdir -m 0755 -p "$IFACEDIR" || \
                error_exit "Failed to create needed directory $IFACEDIR"
        if [ "$cmd" = d ]; then
                # Provide the same error messages as below
                if ! ${force}; then
                        cd "$IFACEDIR"
                        for i in $args; do
                                warn "No resolv.conf for interface $i"
                        done
                fi
                ${force}
                exit $?
        fi
fi

# An interface was added, changed, deleted or a general update was called.
# Due to exclusivity we need to ensure that this is an atomic operation.
# Our subscribers *may* need this as well if the init system is sub par.
# As such we spinlock at this point as best we can.
# We don't use flock(1) because it's not widely available and normally resides
# in /usr which we do our very best to operate without.
[ -w "$VARDIR" ] || error_exit "Cannot write to $LOCKDIR"
: ${lock_timeout:=10}
while true; do
        if mkdir "$LOCKDIR" 2>/dev/null; then
                trap 'rm -rf "$LOCKDIR";' EXIT
                trap 'rm -rf "$LOCKDIR"; exit 1' INT QUIT ABRT SEGV ALRM TERM
                echo $$ >"$LOCKDIR/pid"
                break
        fi
        pid=$(cat "$LOCKDIR/pid")
        if ! kill -0 "$pid"; then
                warn "clearing stale lock pid $pid"
                rm -rf "$LOCKDIR"
                continue
        fi
        lock_timeout=$(($lock_timeout - 1))
        if [ "$lock_timeout" -le 0 ]; then
                error_exit "timed out waiting for lock from pid $pid"
        fi
        sleep 1
done

case "$cmd" in
a)
        # Read resolv.conf from stdin
        resolv="$(cat)"
        changed=false
        changedfile=false
        # If what we are given matches what we have, then do nothing
        if [ -e "$IFACEDIR/$iface" ]; then
                if [ "$(echo "$resolv")" != \
                        "$(cat "$IFACEDIR/$iface")" ]
                then
                        changed=true
                        changedfile=true
                fi
        else
                changed=true
                changedfile=true
        fi

        # Set metric and private before creating the interface resolv.conf file
        # to ensure that it will have the correct flags
        [ ! -d "$METRICDIR" ] && mkdir "$METRICDIR"
        oldmetric="$METRICDIR/"*" $iface"
        newmetric=
        if [ -n "$IF_METRIC" ]; then
                # Pad metric to 6 characters, so 5 is less than 10
                while [ ${#IF_METRIC} -le 6 ]; do
                        IF_METRIC="0$IF_METRIC"
                done
                newmetric="$METRICDIR/$IF_METRIC $iface"
        fi
        rm -f "$METRICDIR/"*" $iface"
        [ "$oldmetric" != "$newmetric" -a \
            "$oldmetric" != "$METRICDIR/* $iface" ] &&
                changed=true
        [ -n "$newmetric" ] && echo " " >"$newmetric"

        case "$IF_PRIVATE" in
        [Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1)
                if [ ! -d "$PRIVATEDIR" ]; then
                        [ -e "$PRIVATEDIR" ] && rm "$PRIVATEDIR"
                        mkdir "$PRIVATEDIR"
                fi
                [ -e "$PRIVATEDIR/$iface" ] || changed=true
                [ -d "$PRIVATEDIR" ] && echo " " >"$PRIVATEDIR/$iface"
                ;;
        *)
                if [ -e "$PRIVATEDIR/$iface" ]; then
                        rm -f "$PRIVATEDIR/$iface"
                        changed=true
                fi
                ;;
        esac

        oldexcl=
        for x in "$EXCLUSIVEDIR/"*" $iface"; do
                if [ -f "$x" ]; then
                        oldexcl="$x"
                        break
                fi
        done
        case "$IF_EXCLUSIVE" in
        [Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1)
                if [ ! -d "$EXCLUSIVEDIR" ]; then
                        [ -e "$EXCLUSIVEDIR" ] && rm "$EXCLUSIVEDIR"
                        mkdir "$EXCLUSIVEDIR"
                fi
                cd "$EXCLUSIVEDIR"
                for x in *; do
                        [ -f "$x" ] && break
                done
                if [ "${x#* }" != "$iface" ]; then
                        if [ "$x" = "${x% *}" ]; then
                                x=10000000
                        else
                                x="${x% *}"
                        fi
                        if [ "$x" = "0000000" ]; then
                                warn "exclusive underflow"
                        else
                                x=$(($x - 1))
                        fi
                        if [ -d "$EXCLUSIVEDIR" ]; then
                                echo " " >"$EXCLUSIVEDIR/$x $iface"
                        fi
                        changed=true
                fi
                ;;
        *)
                if [ -f "$oldexcl" ]; then
                        rm -f "$oldexcl"
                        changed=true
                fi
                ;;
        esac

        if $changedfile; then
                printf "%s\n" "$resolv" >"$IFACEDIR/$iface" || exit $?
        elif ! $changed; then
                exit 0
        fi
        unset changed changedfile oldmetric newmetric x oldexcl
        ;;

d)
        # Delete any existing information about the interface
        cd "$IFACEDIR"
        changed=false
        for i in $args; do
                if [ -e "$i" ]; then
                        changed=true
                elif ! ${force}; then
                        warn "No resolv.conf for interface $i"
                fi
                rm -f "$i" "$METRICDIR/"*" $i" \
                        "$PRIVATEDIR/$i" \
                        "$EXCLUSIVEDIR/"*" $i" || exit $?
        done
        if ! ${changed}; then
                # Set the return code based on the forced flag
                ${force}
                exit $?
        fi
        unset changed i
        ;;
esac

case "${resolvconf:-YES}" in
[Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1) ;;
*) exit 0;;
esac

# Try and detect a suitable init system for our scripts
detect_init
export RESTARTCMD RCDIR _NOINIT_WARNED

eval "$(make_vars)"
export RESOLVCONF DOMAINS SEARCH NAMESERVERS LOCALNAMESERVERS
: ${list_resolv:=list_resolv -l}
retval=0

# Run scripts in the same directory resolvconf is run from
# in case any scripts accidentally dump files in the wrong place.
cd "$_PWD"
for script in "$LIBEXECDIR"/*; do
        if [ -f "$script" ]; then
                eval script_enabled="\$${script##*/}"
                case "${script_enabled:-YES}" in
                [Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1) ;;
                *) continue;;
                esac
                if [ -x "$script" ]; then
                        "$script" "$cmd" "$iface"
                else
                        (set -- "$cmd" "$iface"; . "$script")
                fi
                retval=$(($retval + $?))
        fi
done
exit $retval
#### M3B1US LVM C4SC4D3 DOUBL3 R34CH4ROUND ####
Как, впрочем, и любой менеджер подключений. При перезагрузке компьюетра или перевтыкании провода, связь с интернетом пропадает. До этого использовал systemd-networkd, в нём связь появлялась снова при перезапуске всей службы, в NetworkManager достаточно переподключиться в GUI (что характерно, перезапуск службы не восстанавливает связь в его случае). Оставил его.
Пытался решить проблему самыми разными способами - ну вот не хочет подключаться и всё тут.

Вот так status выглядит, когда сеть работает:
[[email protected] run]$ sudo systemctl status NetworkManager.service
● NetworkManager.service - Network Manager
   Loaded: loaded (/usr/lib/systemd/system/NetworkManager.service; enabled; vendor preset: disabled)
   Active: active (running) since Fri 2017-03-24 09:35:39 MSK; 1h 44min ago
     Docs: man:NetworkManager(8)
 Main PID: 323 (NetworkManager)
    Tasks: 3 (limit: 4915)
   CGroup: /system.slice/NetworkManager.service
           └─323 /usr/bin/NetworkManager --no-daemon

мар 24 10:12:56 SKAIA NetworkManager[323]: <info>  [1490339576.1897] policy: set 'Wired connection 1' (enp3s0) as default for IPv4 routing and DNS
мар 24 10:12:56 SKAIA NetworkManager[323]: <info>  [1490339576.1898] dns-mgr: Writing DNS information to /usr/bin/resolvconf
мар 24 10:12:56 SKAIA NetworkManager[323]: <info>  [1490339576.3218] device (enp3s0): Activation: successful, device activated.
мар 24 10:12:57 SKAIA NetworkManager[323]: <info>  [1490339577.3405] dhcp6 (enp3s0): activation: beginning transaction (timeout in 45 seconds)
мар 24 10:12:57 SKAIA NetworkManager[323]: <info>  [1490339577.3459] policy: set 'Wired connection 1' (enp3s0) as default for IPv6 routing and DNS
мар 24 10:12:57 SKAIA NetworkManager[323]: <info>  [1490339577.3460] dns-mgr: Writing DNS information to /usr/bin/resolvconf
мар 24 10:13:42 SKAIA NetworkManager[323]: <warn>  [1490339622.3311] dhcp6 (enp3s0): request timed out
мар 24 10:13:42 SKAIA NetworkManager[323]: <info>  [1490339622.3311] dhcp6 (enp3s0): state changed unknown -> timeout
мар 24 10:13:42 SKAIA NetworkManager[323]: <info>  [1490339622.3312] dhcp6 (enp3s0): canceled DHCP transaction
мар 24 10:13:42 SKAIA NetworkManager[323]: <info>  [1490339622.3313] dhcp6 (enp3s0): state changed timeout -> done
[[email protected] run]$

Вот это - после вынимания провода:
[[email protected] run]$ sudo systemctl status NetworkManager.service
● NetworkManager.service - Network Manager
   Loaded: loaded (/usr/lib/systemd/system/NetworkManager.service; enabled; vendor preset: disabled)
   Active: active (running) since Fri 2017-03-24 09:35:39 MSK; 1h 44min ago
     Docs: man:NetworkManager(8)
 Main PID: 323 (NetworkManager)
    Tasks: 3 (limit: 4915)
   CGroup: /system.slice/NetworkManager.service
           └─323 /usr/bin/NetworkManager --no-daemon

мар 24 10:13:42 SKAIA NetworkManager[323]: <info>  [1490339622.3311] dhcp6 (enp3s0): state changed unknown -> timeout
мар 24 10:13:42 SKAIA NetworkManager[323]: <info>  [1490339622.3312] dhcp6 (enp3s0): canceled DHCP transaction
мар 24 10:13:42 SKAIA NetworkManager[323]: <info>  [1490339622.3313] dhcp6 (enp3s0): state changed timeout -> done
мар 24 11:20:22 SKAIA NetworkManager[323]: <info>  [1490343622.3263] device (enp3s0): state change: activated -> unavailable (reason 'carrier-changed') [100 20 40]
мар 24 11:20:22 SKAIA NetworkManager[323]: <info>  [1490343622.3265] dhcp4 (enp3s0): canceled DHCP transaction
мар 24 11:20:22 SKAIA NetworkManager[323]: <info>  [1490343622.3265] dhcp4 (enp3s0): state changed bound -> done
мар 24 11:20:22 SKAIA NetworkManager[323]: <info>  [1490343622.3291] dns-mgr: Writing DNS information to /usr/bin/resolvconf
мар 24 11:20:22 SKAIA NetworkManager[323]: <info>  [1490343622.4363] dns-mgr: Removing DNS information from /usr/bin/resolvconf
мар 24 11:20:22 SKAIA NetworkManager[323]: <info>  [1490343622.5367] manager: NetworkManager state is now CONNECTED_LOCAL
мар 24 11:20:22 SKAIA NetworkManager[323]: <info>  [1490343622.5369] manager: NetworkManager state is now DISCONNECTED
[[email protected] run]$

Втыкаю обратно и пробую достучаться до гугла:
[[email protected] run]$ sudo systemctl status NetworkManager.service
● NetworkManager.service - Network Manager
   Loaded: loaded (/usr/lib/systemd/system/NetworkManager.service; enabled; vendor preset: disabled)
   Active: active (running) since Fri 2017-03-24 09:35:39 MSK; 1h 45min ago
     Docs: man:NetworkManager(8)
 Main PID: 323 (NetworkManager)
    Tasks: 3 (limit: 4915)
   CGroup: /system.slice/NetworkManager.service
           └─323 /usr/bin/NetworkManager --no-daemon

мар 24 11:21:02 SKAIA NetworkManager[323]: <info>  [1490343662.4625] dhcp4 (enp3s0):   gateway 192.168.1.1
мар 24 11:21:02 SKAIA NetworkManager[323]: <info>  [1490343662.4629] dhcp4 (enp3s0): state changed unknown -> bound
мар 24 11:21:02 SKAIA NetworkManager[323]: <info>  [1490343662.4648] device (enp3s0): state change: ip-config -> ip-check (reason 'none') [70 80 0]
мар 24 11:21:02 SKAIA NetworkManager[323]: <info>  [1490343662.4659] device (enp3s0): state change: ip-check -> secondaries (reason 'none') [80 90 0]
мар 24 11:21:02 SKAIA NetworkManager[323]: <info>  [1490343662.4668] device (enp3s0): state change: secondaries -> activated (reason 'none') [90 100 0]
мар 24 11:21:02 SKAIA NetworkManager[323]: <info>  [1490343662.4670] manager: NetworkManager state is now CONNECTED_LOCAL
мар 24 11:21:02 SKAIA NetworkManager[323]: <info>  [1490343662.4769] manager: NetworkManager state is now CONNECTED_GLOBAL
мар 24 11:21:02 SKAIA NetworkManager[323]: <info>  [1490343662.4782] policy: set 'Wired connection 1' (enp3s0) as default for IPv4 routing and DNS
мар 24 11:21:02 SKAIA NetworkManager[323]: <info>  [1490343662.4784] dns-mgr: Writing DNS information to /usr/bin/resolvconf
мар 24 11:21:02 SKAIA NetworkManager[323]: <info>  [1490343662.5816] device (enp3s0): Activation: successful, device activated.
[[email protected] run]$ ping 8.8.8.8
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
From 192.168.1.107 icmp_seq=1 Destination Host Unreachable
From 192.168.1.107 icmp_seq=2 Destination Host Unreachable
^C
--- 8.8.8.8 ping statistics ---
6 packets transmitted, 0 received, +2 errors, 100% packet loss, time 5050ms
pipe 5
[[email protected] run]$

Отключаюсь в GUI:
[[email protected] run]$ sudo systemctl status NetworkManager.service
● NetworkManager.service - Network Manager
   Loaded: loaded (/usr/lib/systemd/system/NetworkManager.service; enabled; vendor preset: disabled)
   Active: active (running) since Fri 2017-03-24 09:35:39 MSK; 1h 46min ago
     Docs: man:NetworkManager(8)
 Main PID: 323 (NetworkManager)
    Tasks: 3 (limit: 4915)
   CGroup: /system.slice/NetworkManager.service
           └─323 /usr/bin/NetworkManager --no-daemon

мар 24 11:21:46 SKAIA NetworkManager[323]: <info>  [1490343706.3372] dhcp6 (enp3s0): state changed timeout -> done
мар 24 11:22:05 SKAIA NetworkManager[323]: <info>  [1490343725.2363] device (enp3s0): state change: activated -> deactivating (reason 'user-requested') [100 110 39]
мар 24 11:22:05 SKAIA NetworkManager[323]: <info>  [1490343725.2366] manager: NetworkManager state is now DISCONNECTING
мар 24 11:22:05 SKAIA NetworkManager[323]: <info>  [1490343725.2435] audit: op="device-disconnect" interface="enp3s0" ifindex=2 pid=1027 uid=1000 result="success"
мар 24 11:22:05 SKAIA NetworkManager[323]: <info>  [1490343725.2444] device (enp3s0): state change: deactivating -> disconnected (reason 'user-requested') [110 30 39]
мар 24 11:22:05 SKAIA NetworkManager[323]: <info>  [1490343725.2451] dhcp4 (enp3s0): canceled DHCP transaction
мар 24 11:22:05 SKAIA NetworkManager[323]: <info>  [1490343725.2452] dhcp4 (enp3s0): state changed bound -> done
мар 24 11:22:05 SKAIA NetworkManager[323]: <info>  [1490343725.2469] dns-mgr: Writing DNS information to /usr/bin/resolvconf
мар 24 11:22:05 SKAIA NetworkManager[323]: <info>  [1490343725.3752] dns-mgr: Removing DNS information from /usr/bin/resolvconf
мар 24 11:22:05 SKAIA NetworkManager[323]: <info>  [1490343725.4742] manager: NetworkManager state is now DISCONNECTED
[[email protected] run]$

Включаюсь обратно, гугл отвечает:
[[email protected] run]$ sudo systemctl status NetworkManager.service
● NetworkManager.service - Network Manager
   Loaded: loaded (/usr/lib/systemd/system/NetworkManager.service; enabled; vendor preset: disabled)
   Active: active (running) since Fri 2017-03-24 09:35:39 MSK; 1h 47min ago
     Docs: man:NetworkManager(8)
 Main PID: 323 (NetworkManager)
    Tasks: 3 (limit: 4915)
   CGroup: /system.slice/NetworkManager.service
           └─323 /usr/bin/NetworkManager --no-daemon

мар 24 11:22:41 SKAIA NetworkManager[323]: <info>  [1490343761.4922] device (enp3s0): state change: ip-check -> secondaries (reason 'none') [80 90 0]
мар 24 11:22:41 SKAIA NetworkManager[323]: <info>  [1490343761.4927] device (enp3s0): state change: secondaries -> activated (reason 'none') [90 100 0]
мар 24 11:22:41 SKAIA NetworkManager[323]: <info>  [1490343761.4930] manager: NetworkManager state is now CONNECTED_LOCAL
мар 24 11:22:41 SKAIA NetworkManager[323]: <info>  [1490343761.4998] manager: NetworkManager state is now CONNECTED_GLOBAL
мар 24 11:22:41 SKAIA NetworkManager[323]: <info>  [1490343761.5000] policy: set 'Wired connection 1' (enp3s0) as default for IPv4 routing and DNS
мар 24 11:22:41 SKAIA NetworkManager[323]: <info>  [1490343761.5001] dns-mgr: Writing DNS information to /usr/bin/resolvconf
мар 24 11:22:41 SKAIA NetworkManager[323]: <info>  [1490343761.6329] device (enp3s0): Activation: successful, device activated.
мар 24 11:22:43 SKAIA NetworkManager[323]: <info>  [1490343763.3423] dhcp6 (enp3s0): activation: beginning transaction (timeout in 45 seconds)
мар 24 11:22:43 SKAIA NetworkManager[323]: <info>  [1490343763.3440] policy: set 'Wired connection 1' (enp3s0) as default for IPv6 routing and DNS
мар 24 11:22:43 SKAIA NetworkManager[323]: <info>  [1490343763.3441] dns-mgr: Writing DNS information to /usr/bin/resolvconf
[[email protected] run]$ ping 8.8.8.8
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_seq=1 ttl=56 time=3.37 ms
64 bytes from 8.8.8.8: icmp_seq=2 ttl=56 time=3.38 ms
64 bytes from 8.8.8.8: icmp_seq=3 ttl=56 time=3.46 ms
^C
--- 8.8.8.8 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2003ms
rtt min/avg/max/mdev = 3.370/3.406/3.466/0.079 ms
[[email protected] run]$

Вот мой конфиг:
GNU nano 2.7.5 Файл: /etc/NetworkManager/NetworkManager.conf

# Configuration file for NetworkManager.
# See "man 5 NetworkManager.conf" for details.
[main]
plugins=ifupdown,keyfile

[ifupdown]
managed=true

[connectivity]
uri=google.com
interval=60
response=Google

ЧЯДНТ? Пользуюсь линем четвёртый день, не бейте тапками сильно.
#### M3B1US LVM C4SC4D3 DOUBL3 R34CH4ROUND ####