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IP Stuff

Secondary Address on Loopback

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sudo ip address add 192.168.255.0/32 dev lo label lo:dummy1

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$ > ip address show
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
    inet 192.168.255.0/32 scope global lo:dummy1
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host noprefixroute
       valid_lft forever preferred_lft forever
2: enp1s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
    link/ether 52:54:00:b1:33:fd brd ff:ff:ff:ff:ff:ff
    inet 192.168.1.245/24 metric 100 brd 192.168.1.255 scope global dynamic enp1s0
       valid_lft 542609sec preferred_lft 542609sec
    inet6 2a01:e0a:b17:d890:5054:ff:feb1:33fd/64 scope global dynamic mngtmpaddr noprefixroute
       valid_lft 86127sec preferred_lft 86127sec
    inet6 fe80::5054:ff:feb1:33fd/64 scope link
       valid_lft forever preferred_lft forever
3: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
    link/ether 2e:e5:5c:81:e7:ec brd ff:ff:ff:ff:ff:ff
    inet 172.17.0.1/16 brd 172.17.255.255 scope global docker0
       valid_lft forever preferred_lft forever