[root@server log]# ifconfig; ip addr list
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 77.81.xxx.xxx netmask 255.255.248.0 broadcast 77.81.xxx.255
inet6 fe80::f816:3eff:fef6:81f prefixlen 64 scopeid 0x20<link>
ether fa:16:3e:f6:08:1f txqueuelen 1000 (Ethernet)
RX packets 1693290 bytes 107026703 (102.0 MiB)
RX errors 0 dropped 14 overruns 0 frame 0
TX packets 29140 bytes 6420663 (6.1 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1 (Local Loopback)
RX packets 3067 bytes 171948 (167.9 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 3067 bytes 171948 (167.9 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN qlen 1
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether fa:16:3e:f6:08:1f brd ff:ff:ff:ff:ff:ff
inet 77.81.xxx.xxx/21 brd 77.81.247.255 scope global dynamic eth0
valid_lft 82970sec preferred_lft 82970sec
inet6 fe80::f816:3eff:fef6:81f/64 scope link
valid_lft forever preferred_lft forever