Description

If the SIP request URI has a parameter ;user=phone, then the match with myself fails with error in log.

Troubleshooting

Sending an OPTIONS request through the proxy:

OPTIONS sip:+358removed@example.com;user=phone SIP/2.0.
...
From: <sip:+358removed@example.com;user=phone>;tag=JJhksk01ou7PFTq8xz1-GlhgGNG-c94A.
To: <sip:+358removed@example.com;user=phone>.
...
Content-Length:  0.

Note: The R-URI does NOT match myself. It never does in my case unless it's an attacker.

Reproduction

My config is very simple in terms of aliases:

auto_aliases=no
alias=172.29.1.21:5060

and in routing block:

if (uri==myself) return;

Log shows:

Listening on
             udp: 172.29.1.21 [172.29.1.21]:5060
Aliases:
             *: 172.29.1.21:5060

...
 7(20681) ERROR: <core> [core/resolve.c:1808]: str2ip6buf(): invalid name, no conversion to IP address possible
...

Possible Solutions

Sorry, I couldn't figure out where in the source this call to resolve.c functions happens.

Additional Information

• Kamailio Version - output of kamailio -v

version: kamailio 5.3.6 (x86_64/linux) bf6c08
flags: USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, USE_RAW_SOCKS, DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, 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
ADAPTIVE_WAIT_LOOPS 1024, MAX_RECV_BUFFER_SIZE 262144, MAX_URI_SIZE 1024, BUF_SIZE 65535, DEFAULT PKG_SIZE 8MB
poll method support: poll, epoll_lt, epoll_et, sigio_rt, select.
id: bf6c08
compiled on 09:25:09 Sep 10 2020 with gcc 4.8.5

• Operating System:

Amazon Linux 2  (up to date) on AWS

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