Kamailio 3.1 log is filled with lines like
Oct 29 03:32:46 west /usr/local/sbin/kamailio[632]: INFO: <script>: incoming
reply from udp:188.62.4.186:65333 SIP/2.0 404 Not Found Via: SIP/2.0/UDP
204.74.213.5:5060;branch=0 From: <sip:pinger@sip.callwithus.com>;tag=3993f0c
To: <sip:188.62.4.186:65333> Call-ID: aff32da5-89ef0136-71dc8c5(a)204.74.213.5
CSeq: 1 OPTIONS Content-Length: 0
Oct 29 03:32:46 west /usr/local/sbin/kamailio[632]: INFO: <core>
[forward.c:774]: broken reply to forward - no 2nd via
Shouldn't replies to NAT ping messages be silently dropped like in 1.4?