# air-ipv6=on, ipv6=off $ ip -6 a 1: lo: mtu 65536 state UNKNOWN qlen 1000 inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: enp39s0: mtu 1500 state UP qlen 1000 inet6 2003:…/64 scope global temporary dynamic valid_lft 7088sec preferred_lft 1688sec inet6 2003:…/64 scope global dynamic mngtmpaddr noprefixroute valid_lft 7088sec preferred_lft 1688sec inet6 fe80::433c:773a:8904:118d/64 scope link noprefixroute valid_lft forever preferred_lft forever 4: tun0: mtu 1500 state UNKNOWN qlen 200 inet6 fe80::f9d9:ea0f:1b39:86f2/64 scope link stable-privacy valid_lft forever preferred_lft forever # air-ipv6=off, ipv6=on $ ip -6 a 1: lo: mtu 65536 state UNKNOWN qlen 1000 inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: enp39s0: mtu 1500 state UP qlen 1000 inet6 2003:…/64 scope global temporary dynamic valid_lft 6784sec preferred_lft 1384sec inet6 2003:…/64 scope global dynamic mngtmpaddr noprefixroute valid_lft 6784sec preferred_lft 1384sec inet6 fe80::433c:773a:8904:118d/64 scope link noprefixroute valid_lft forever preferred_lft forever 5: tun0: mtu 1500 state UNKNOWN qlen 200 inet6 fe80::f7be:7895:6813:d60a/64 scope link stable-privacy valid_lft forever preferred_lft forever $ ip -6 r, on disconnect 2a02… is removed, stays the same with both options ::1 dev lo proto kernel metric 256 pref medium 2003:…/64 dev enp39s0 proto ra metric 100 pref medium 2003:…/56 via fe80::… dev enp39s0 proto ra metric 100 pref medium 2a02:c205:0:1031:c1d7:aa8c:4a26:1d03 via fe80::9a9b:cbff:fe6d:a378 dev enp39s0 metric 1024 pref medium fe80::/64 dev enp39s0 proto kernel metric 100 pref medium fe80::/64 dev tun0 proto kernel metric 256 pref medium default via fe80::… dev enp39s0 proto ra metric 100 pref medium # not connected $ ip -6 a 1: lo: mtu 65536 state UNKNOWN qlen 1000 inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: enp39s0: mtu 1500 state UP qlen 1000 inet6 2003:…/64 scope global temporary dynamic valid_lft 7073sec preferred_lft 1673sec inet6 2003:…/64 scope global dynamic mngtmpaddr noprefixroute valid_lft 7073sec preferred_lft 1673sec inet6 fe80::433c:773a:8904:118d/64 scope link noprefixroute valid_lft forever preferred_lft forever