We had an issue following a thunderstorm and a later reboot where the system could receive calls but make outing.
chan.sip failed to load, also in the webpage the trunks showed as "unreachable" but the sip show registry reported "registered"
Initially we thought it could be storm related but since then, checking other systems, found more withe the same setting, but not affected or 1 trunk would not work but a 2nd one would.
QuoteERROR[1335] chan_sip.c: Bad localnet configuration value line 2 : /0.0.0.0
Editing sark_sip_localnet.conf line to localnet=127.0.0.1/0.0.0.0 solved the issue.
I am a little curious as to why the line by default seems to be wrong and why it has laid benignly dormant for so long.