[tom@min ~]$ ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
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 noprefixroute
valid_lft forever preferred_lft forever
2: enp3s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
link/ether 5c:5b:60:39:67:48 brd ff:ff:ff:ff:ff:ff
inet 192.168.0.5/24 brd 192.168.0.255 scope global dynamic enp3s0
valid_lft 61531sec preferred_lft 61531sec
inet 192.168.0.4/24 brd 192.168.0.255 scope global secondary enp3s0
valid_lft forever preferred_lft forever
inet6 2001:8003:cc3c:1f01:9e6b:ff:fe29:3748/64 scope global dynamic mngtmpaddr proto kernel_ra
valid_lft 4619sec preferred_lft 4619sec
inet6 fe80::9e6b:ff:fe29:3748/64 scope link proto kernel_ll
valid_lft forever preferred_lft forever
3: wlp0s20f3: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
link/ether f3:47:66:89:34:4f brd ff:ff:ff:ff:ff:ff
[tom@min ~]$ ip a | sed -r 's/([0-9a-fA-F]{2}:){5}[0-9a-fA-F]{2}/xx:xx:xx:xx:xx:xx/g'
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback xx:xx:xx:xx:xx:xx brd xx:xx:xx:xx:xx:xx
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host noprefixroute
valid_lft forever preferred_lft forever
2: enp3s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
link/ether xx:xx:xx:xx:xx:xx brd xx:xx:xx:xx:xx:xx
inet 192.168.0.5/24 brd 192.168.0.255 scope global dynamic enp3s0
valid_lft 59792sec preferred_lft 59792sec
inet 192.168.0.4/24 brd 192.168.0.255 scope global secondary enp3s0
valid_lft forever preferred_lft forever
inet6 2001:8003:cc3c:1f01:9e6b:ff:fe29:3748/64 scope global dynamic mngtmpaddr proto kernel_ra
valid_lft 4585sec preferred_lft 4585sec
inet6 fe80::9e6b:ff:fe29:3748/64 scope link proto kernel_ll
valid_lft forever preferred_lft forever
3: wlp0s20f3: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
link/ether xx:xx:xx:xx:xx:xx brd xx:xx:xx:xx:xx:xx