[root@server3 ~]# vzctl set 821134 --ipadd 192.168.1.7 --save
Adding IP address(es): 192.168.1.7
arpsend: 192.168.1.7 is detected on another computer : 00:11:20:f9:b7:01
vps-net_add WARNING: arpsend -c 1 -w 1 -D -e 192.168.1.7 eth0 FAILED
Saved parameters for CT 821134

[root@ns1 ~]# ping 192.168.1.1
PING 192.168.1.1 (192.168.1.1) 56(84) bytes of data.
64 bytes from 192.168.1.1: icmp_seq=1 ttl=64 time=0.045 ms
64 bytes from 192.168.1.1: icmp_seq=2 ttl=64 time=0.030 ms

[root@ns1 ~]# ping 192.168.1.2
PING 192.168.1.2 (192.168.1.2) 56(84) bytes of data.

--- 192.168.1.2 ping statistics ---
8 packets transmitted, 0 received, 100% packet loss, time 7001ms