Здравствуйте.
В локальной сети 3 машины, везде установлен арч. Почему-то одна машина перестала отзываться на имя (раньше работало года два).

$: /bin/ping -c1 vista
/bin/ping: vista: Неизвестное имя или служба

$: /bin/ping -c1 samsung
PING samsung (192.168.0.105) 56(84) bytes of data.
64 bytes from samsung (192.168.0.105): icmp_seq=1 ttl=64 time=0.383 ms

--- samsung ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.383/0.383/0.383/0.000 ms

Выводы с неё:
$: resolvectl
Global
           Protocols: +LLMNR +mDNS -DNSOverTLS DNSSEC=no/unsupported
    resolv.conf mode: foreign
  Current DNS Server: 192.168.0.1
         DNS Servers: 192.168.0.1
Fallback DNS Servers: 9.9.9.9#dns.quad9.net 8.8.8.8#dns.google
                      2620:fe::9#dns.quad9.net 2001:4860:4860::8888#dns.google

Link 2 (enp2s0)
Current Scopes: none
     Protocols: -DefaultRoute +LLMNR -mDNS -DNSOverTLS DNSSEC=no/unsupported

Link 3 (wlp3s5)
    Current Scopes: DNS LLMNR/IPv4
         Protocols: +DefaultRoute +LLMNR -mDNS -DNSOverTLS DNSSEC=no/unsupported
Current DNS Server: 192.168.0.1
       DNS Servers: 192.168.0.1

$: hostnamectl
 Static hostname: vista
       Icon name: computer-desktop
         Chassis: desktop
      Machine ID: a31dca4f99fa40b8b35f96a6655c9ee7
         Boot ID: 18babc1fe76a41308eef4401c1b49fe6
Operating System: Arch Linux
          Kernel: Linux 5.16.13-zen1-1-zen
    Architecture: x86-64
 Hardware Vendor: System manufacturer
  Hardware Model: System Product Name