Hi,
It happened again, I checked the captures and this is what is happening during the issue:
From KamailioB to KamailioC/D
1. Kamailio B is sending OPTIONS to KamailioC/D.
2. KamailioC/D are replying 200.
3. Kamailio B is not acting to those 200 and has the nodes DOWN (probably because it is in
that "hung" state).
At the same time:
From KamailioC/D to KamailioB
1. KamailioC/D are sending OPTIONS to KamailioB.
2. KamailioB is NOT replying anything.
This time I had to restart Kamailio and it started working right away again.
[
backtrace_20170701_2001.tar.gz](https://github.com/kamailio/kamailio/files/…
Sorry for so many posts, but I update this as things happen.
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