<h3>Description</h3>
<p>The 200OK reply to SUBSCRIBE on IPv6 has the Contact header<br>
wrong formatted, it's appear as:</p>
<p>Contact: sip:2222:0:0:0:0:0:0:55:4060;transport=udp</p>
<p>instead of</p>
<p>Contact: sip:[2222:0:0:0:0:0:0:55]:4060;transport=udp</p>
<h3>Troubleshooting</h3>
<h4>Reproduction</h4>
<h4>Debugging Data</h4>
<pre><code>(paste your debugging data here)
</code></pre>
<h4>Log Messages</h4>
<pre><code>(paste your log messages here)
</code></pre>
<h4>SIP Traffic</h4>
<p>UBSCRIBE sip:<a href="mailto:+393498786882@ims.mnc021.mcc292.3gppnetwork.org">+393498786882@ims.mnc021.mcc292.3gppnetwork.org</a> SIP/2.0<br>
Via: SIP/2.0/UDP [2221::5]:4060;branch=z9hG4bK-5-0-95675325205398405120;rport<br>
From: sip:+393498786882@ims.mnc021.mcc292.3gppnetwork.org;tag=5-0-63373794482729304064<br>
To: sip:+393498786882@ims.mnc021.mcc292.3gppnetwork.org<br>
Call-ID: callid-5-0-cnt-2-23363871231378927616<br>
Contact: sip:+393498786882@[2221::5]:4060;expires=80<br>
Max-Forwards: 70<br>
User-Agent: SIPv3 UeSIM LTE - vtrunk_C<br>
Allow: INVITE,ACK,BYE,CANCEL,NOTIFY,MESSAGE,OPTIONS,PRACK,UPDATE,REFER<br>
Expires: 80<br>
Proxy-Authorization: Digest username="<a href="mailto:+393498786882@ims.mnc021.mcc292.3gppnetwork.org">+393498786882@ims.mnc021.mcc292.3gppnetwork.org</a>",<br>
realm="ims.mnc021.mcc292.3gppnetwork.org",<br>
algorithm=MD5,<br>
nonce="WIIsT1iCKyMEfQy/SmMqSl2b4P4n2vR7",<br>
uri="sip:ims.mnc021.mcc292.3gppnetwork.org",<br>
response="4e39c2ab34e4009dca083e4cbd2acebc",<br>
cnonce="59159616548176674082335766872064",<br>
qop=auth,<br>
nc=00000001<br>
Event: presence.winfo<br>
Allow-Events: reg, presence, presence.winfo<br>
Privacy: none<br>
Accept: application/watcherinfo+xml<br>
CSeq: 76585 SUBSCRIBE<br>
Organization: Sent by UAC Transaction Layer<br>
Content-Length: 0</p>
<p>SIP/2.0 200 OK<br>
Via: SIP/2.0/UDP [2221::5]:4060;branch=z9hG4bK-5-0-95675325205398405120;rport=4060;received=2221:0:0:0:0:0:0:5<br>
From: sip:+393498786882@ims.mnc021.mcc292.3gppnetwork.org;tag=5-0-63373794482729304064<br>
To: sip:+393498786882@ims.mnc021.mcc292.3gppnetwork.org;tag=be7ce37c4413768ae7f9747982106912-651e<br>
Call-ID: callid-5-0-cnt-2-23363871231378927616<br>
CSeq: 76585 SUBSCRIBE<br>
Expires: 80<br>
Contact: sip:2222:0:0:0:0:0:0:55:4060;transport=udp<br>
Server: kamailio (4.4.5 (x86_64/linux))<br>
Content-Length: 0<br>
Warning: 392 [2222:0:0:0:0:0:0:55]:4060 "Noisy feedback tells: pid=27504 req_src_ip=2221:0:0:0:0:0:0:5 req_src_port=4060 in_uri=sip:<a href="mailto:+393498786882@ims.mnc021.mcc292.3gppnetwork.org">+393498786882@ims.mnc021.mcc292.3gppnetwork.org</a> out_uri=sip:<a href="mailto:+393498786882@ims.mnc021.mcc292.3gppnetwork.org">+393498786882@ims.mnc021.mcc292.3gppnetwork.org</a> via_cnt==1"</p>
<pre><code>(paste your sip traffic here)
</code></pre>
<h3>Possible Solutions</h3>
<h3>Additional Information</h3>
<ul>
<li><strong>Kamailio Version</strong> - output of <code>kamailio -v</code></li>
</ul>
<p>version: kamailio 4.4.5 (x86_64/linux)<br>
flags: STATS: Off, USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MEM, SHM_MMAP, PKG_MALLOC, Q_MALLOC, F_MALLOC, TLSF_MALLOC, DBG_SR_MEMORY, USE_FUTEX, FAST_LOCK-ADAPTIVE_WAIT, USE_DNS_CACHE, USE_DNS_FAILOVER, USE_NAPTR, USE_DST_BLACKLIST, HAVE_RESOLV_RES<br>
ADAPTIVE_WAIT_LOOPS=1024, MAX_RECV_BUFFER_SIZE 262144, MAX_LISTEN 16, MAX_URI_SIZE 1024, BUF_SIZE 65535, DEFAULT PKG_SIZE 8MB<br>
poll method support: poll, epoll_lt, epoll_et, sigio_rt, select.<br>
id: unknown<br>
compiled with gcc 4.9.2</p>
<pre><code>(paste your output here)
</code></pre>
<ul>
<li><strong>Operating System</strong>:</li>
</ul>
<p>Distributor ID: Debian<br>
Description: Debian GNU/Linux 8.7 (jessie)<br>
Release: 8.7<br>
Codename: jessie</p>
<pre><code>(paste your output here)
</code></pre>
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