root@Freifunk-FeWo-Zum-Engelkamp:~# ip a s br-wan
7: br-wan: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue
    link/ether ee:09:6b:7c:c0:8e brd ff:ff:ff:ff:ff:ff
    inet 100.69.34.191/18 brd 100.69.63.255 scope global br-wan
       valid_lft forever preferred_lft forever
    inet6 fe80::ec09:6bff:fe7c:c08e/64 scope link
       valid_lft forever preferred_lft forever