> Am 03.09.2024 um 17:45 schrieb Florian Obser <flor...@openbsd.org>: > > route -n monitor -inet6 | fgrep -A2 RTM_NEWADDR
Very interesting! Thank you! I looked at the output of `route -n monitor -inet6` as there seems to be no documentation for what that looks like. And my Internet provider obliged me with a short outage which meant that new IPs were provided when it came back up. The output certainly contains all the relevant information. I’ll probably have to build some sort of state machine to make use of the output, i.e. when it sees the first line containing RTM_NEWADDR, parse to extract the interface name, then read the second line and discard, then read the third line, extract the new IP/prefix and trigger an action, rinse and repeat. Dealing with potential errors where route(8) stops sending output for some reason might be non-trivial as well. I’d like this to either auto-restart or notify the operator (me) in that case. But this seems like a more efficient method than polling. Mike
