My OS X machine gets assigned two public IP addresses from Android 7.1.1:
% ifconfig en0 en0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500 ether 8c:29:XX:XX:XX:XX inet6 fe80::8e29:XXff:feXX:XXXX%en0 prefixlen 64 scopeid 0x4 inet 192.168.43.163 netmask 0xffffff00 broadcast 192.168.43.255 inet6 2607:fb90:4bYY:YYYY:8e29:XXff:feXX:XXXX prefixlen 64 autoconf inet6 2607:fb90:4bYY:YYYY:d427:13ba:ZZZZ:ZZZZ prefixlen 64 autoconf temporary nd6 options=1<PERFORMNUD> media: autoselect status: active
The problem I've encountered is that the
temporary one may change with sleep/wake, whereas the permanent one still has the prefix that is not guaranteed to stay the same (it depends on ME).
I want to use the non-temporary address for
ssh, or, at least, extend the time during which the
temporary address stays the same (e.g., let's say, to get it automatically hardcoded until the /64 prefix gets reassigned upstream). How?!
As a sidenote, I'm trying to make it easier to identify my ssh connections from within the cloud, as well as make my
ssh connections not break between short sleeps; it seems there's an
ssh_config(5) option called
BindAddress, and it does appear to work (
ssh -oBindAddress=2607:fb90:4b61:7474:8e29:XXff:feXX:XXXX …), but I'd prefer to have this configured without hardcoding the prefix that's still temporary in nature. E.g., the solution I'm looking for likely involves system preferences; it's OK if it's not exclusive to ssh.