1 Да, ДНС рабочие, это ДНС провайдера где стоит нода, с ноды резолвится все отлично
[root@host-46-129 vz]# ping mail.ru
PING mail.ru (194.67.57.226) 56(84) bytes of data.
64 bytes from mail.ru (194.67.57.226): icmp_seq=1 ttl=122 time=1.83 ms
64 bytes from mail.ru (194.67.57.226): icmp_seq=2 ttl=122 time=1.57 ms
64 bytes from mail.ru (194.67.57.226): icmp_seq=3 ttl=122 time=2.07 ms
--- mail.ru ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2001ms
rtt min/avg/max/mdev = 1.579/1.829/2.075/0.202 ms
[root@host-46-129 vz]# cat /etc/resolv.conf
nameserver 87.240.1.1
nameserver 213.248.0.6
[root@host-46-129 vz]# vzctl enter 46130
entered into CT 46130
[root@host-46-130 /]# ping mail.ru
ping: unknown host mail.ru
[root@host-46-130 /]# ping 213.248.46.129
PING 213.248.46.129 (213.248.46.129) 56(84) bytes of data.
64 bytes from 213.248.46.129: icmp_seq=1 ttl=64 time=0.030 ms
64 bytes from 213.248.46.129: icmp_seq=2 ttl=64 time=0.014 ms
--- 213.248.46.129 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1000ms
rtt min/avg/max/mdev = 0.014/0.022/0.030/0.008 ms
[root@host-46-130 /]# ping 213.248.0.6
PING 213.248.0.6 (213.248.0.6) 56(84) bytes of data.
64 bytes from 213.248.0.6: icmp_seq=1 ttl=61 time=0.842 ms
64 bytes from 213.248.0.6: icmp_seq=2 ttl=61 time=0.896 ms
--- 213.248.0.6 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1000ms
rtt min/avg/max/mdev = 0.842/0.869/0.896/0.027 ms
[root@host-46-130 /]#