[SR-Users] kamailio 4.0.4 '408' response

[kamailio at AaronLux.com]

Below please find a filtered SIP packet capture showing a problem I'm
having with callee '408' responses in kamailio 4.0.4.  The '408'
response occurs after both caller and callee successfully establish
2-way audio.  In this setup kamailio is running behind a NAT and both
SIP clients connect via WAN and rtpproxy is started with the following
command 'rtpproxy  -F -l 192.168.1.LAN -A 66.41.221.WAN -s
unix:/var/run/rtpproxy.sock -d DBUG:LOG_LOCAL0 -m 10000 -M 20000'  Ports
5061 and Ports 10000-20000 are forwarded to the kamailio server and
kamailio has TLS enabled.  Please let me know if you know if you need
more info.
Thanks,
Aaron

# Filtered SIP capture showing only 408 response:
http://pastebin.com/pBcZNGA4


# rtpproxy -v
Basic version: 20040107
Extension 20050322: Support for multiple RTP streams and MOH
Extension 20060704: Support for extra parameter in the V command
Extension 20071116: Support for RTP re-packetization
Extension 20071218: Support for forking (copying) RTP stream
Extension 20080403: Support for RTP statistics querying
Extension 20081102: Support for setting codecs in the update/lookup command
Extension 20081224: Support for session timeout notifications
Extension 20090810: Support for automatic bridging


# kamailio -v
version: kamailio 4.0.4 (i386/linux) cabe58
flags: STATS: Off, USE_IPV6, USE_TCP, USE_TLS, TLS_HOOKS, USE_RAW_SOCKS,
DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MEM, SHM_MMAP, PKG_MALLOC,
USE_FUTEX, FAST_LOCK-ADAPTIVE_WAIT, USE_DNS_CACHE, USE_DNS_FAILOVER,
USE_NAPTR, USE_DST_BLACKLIST, HAVE_RESOLV_RES
ADAPTIVE_WAIT_LOOPS=1024, MAX_RECV_BUFFER_SIZE 262144, MAX_LISTEN 16,
MAX_URI_SIZE 1024, BUF_SIZE 65535, DEFAULT PKG_SIZE 4MB
poll method support: poll, epoll_lt, epoll_et, sigio_rt, select.
id: cabe58
compiled on 01:07:11 Nov  2 2013 with gcc 4.4.7