[gavrilov-anton]

*** Can't find server name for address 172.21.41.65: No response from server
*** Default servers are not available
Server: UnKnown
Address: 172.21.41.65

DNS request timed out.
timeout was 2 seconds.
*** UnKnown can't find ya.ru: No response from server

172.21.41.65 DNS сервер который был вбит изначально в настройки соединения и не менялся.
IP соединения 172,21,41,66

А вот на другом компе в той же сетке:
Server: ns.lanta-net.ru
Address: 193.203.60.1

Non-authoritative answer:
Name: ya.ru
Addresses: 93.158.134.8, 213.180.204.8, 77.88.21.8