Daniel-Constantin Mierla writes:
If you have access to the system when that blocks in
this way during
that interval, take the output of 'kamctl trap' or the backtrace with
gdb for a sip udp worker process.
Got trap of all processes. Placed it here:
https://box.tutpro.com/tmp/gdb_kamailio_20190902_072911
-- Juha