[root@centos networks]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
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: eno1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether c0:3f:d5:66:c3:01 brd ff:ff:ff:ff:ff:ff
inet 192.168.1.3/24 brd 192.168.1.255 scope global dynamic eno1
   valid_lft 86247sec preferred_lft 86247sec
inet6 fe80::c23f:d5ff:fe66:c301/64 scope link
   valid_lft forever preferred_lft forever
3: wlp2s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000
link/ether ac:fd:ce:03:2c:58 brd ff:ff:ff:ff:ff:ff
inet 192.168.1.2/24 brd 192.168.1.255 scope global dynamic wlp2s0
   valid_lft 63321sec preferred_lft 63321sec
inet6 fe80::aefd:ceff:fe03:2c58/64 scope link
   valid_lft forever preferred_lft forever
14: virbr0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP
link/ether 52:54:00:35:f6:c9 brd ff:ff:ff:ff:ff:ff
inet 192.168.4.0/24 brd 192.168.4.255 scope global virbr0
   valid_lft forever preferred_lft forever

ip a a 192.168.4.3/24 dev virbr0

ip r d default via 192.168.4.2
ip r a default via 192.168.4.1

ip a
ip r