[asterisk-bugs] [JIRA] Created: (ASTERISK-20498) Asterisk does not support .invalid IPv6 unspecified address

[William Ye (JIRA)]

Asterisk does not support .invalid IPv6 unspecified address
-----------------------------------------------------------

                 Key: ASTERISK-20498
                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-20498
             Project: Asterisk
          Issue Type: Bug
      Security Level: None
          Components: Channels/chan_sip/General, Channels/chan_sip/IPv6
    Affects Versions: 1.8.15.1
         Environment: redhat-release:
Fedora Core release 6 (Zod)

uname -a
Linux labpbx1 2.6.18-1.2798.fc6 #1 SMP Mon Oct 16 14:54:20 EDT 2006 i686 i686 i386 GNU/Linux
            Reporter: William Ye


For IPv6, when c line in INVITE SDP contains the .invalid unspecified IPv6 address (http://tools.ietf.org/html/rfc6157#section-4.1), Asterisk is not able to handle it (returns 488).

The .invalid unspecified address is used in various 3rd party call control scenarios (hold, xfer, etc.)

Looks like the address is fed into getaddrinfo() directly and thus can not be resolved.
 
<--- SIP read from UDP:[2002:c0a8:5702::1]:5060 --->
INVITE sip:2437205@[2002:c0a8:51a9::1]:5060 SIP/2.0
From: <sip:1434437208@[2001:87::2]>;tag=as2005694a
To: "2437205" <sip:2437205@[2002:c0a8:51a9::1]>;tag=as57091ae6
Call-ID: 1eb10c625f4c149e1b0a9dbe487abb78@[2002:c0a8:51a9::1]:5060
CSeq: 1 INVITE
Max-Forwards: 69
Content-Type: application/sdp
Content-Length: 357
Remote-Party-ID: "asteriskAI Deny" <sip:2437208 at ftr36-e;transport=udp>;party=calling
P-Asserted-Identity: "asteriskAI Deny" <sip:2437208 at ftr36-e;transport=udp>
Contact: <sip:[2001:87::2]:5060;abrazohostnode=2001:87::2;transport=udp;lr>
Via: SIP/2.0/UDP [2001:87::2]:5060;branch=z9hG4bK4fefcb354d975a77c0b4953c6bfc06e1;rport

v=0
o=root 1870383087 100003 IN IP6 2002:c0a8:51a9::1
s=Asterisk PBX UNKNOWN__and_probably_unsupported
c=IN IP6 tango-networks.invalid
t=0 0
m=audio 25568 RTP/AVP 0 8 101
c=IN IP6 tango-networks.invalid
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-16
a=silenceSupp:off - - - -
a=ptime:20
a=sendrecv
<------------->
[Sep 27 10:28:27] VERBOSE[3257] chan_sip.c: --- (12 headers 14 lines) ---
[Sep 27 10:28:27] VERBOSE[3257] chan_sip.c: Sending to [2002:c0a8:5702::1]:5060 (NAT)
[Sep 27 10:28:27] ERROR[3257] netsock2.c: getaddrinfo("tango-networks.invalid", "(null)", ...): Name or service not known
[Sep 27 10:28:27] WARNING[3257] chan_sip.c: Unable to lookup RTP Audio host in c= line, 'IN IP6 tango-networks.invalid'
[Sep 27 10:28:27] VERBOSE[3257] chan_sip.c: Found RTP audio format 0
[Sep 27 10:28:27] VERBOSE[3257] chan_sip.c: Found RTP audio format 8
[Sep 27 10:28:27] VERBOSE[3257] chan_sip.c: Found RTP audio format 101
[Sep 27 10:28:27] ERROR[3257] netsock2.c: getaddrinfo("tango-networks.invalid", "(null)", ...): Name or service not known
[Sep 27 10:28:27] WARNING[3257] chan_sip.c: Unable to lookup RTP Audio host in c= line, 'IN IP6 tango-networks.invalid'
[Sep 27 10:28:27] VERBOSE[3257] chan_sip.c: Found audio description format PCMU for ID 0
[Sep 27 10:28:27] VERBOSE[3257] chan_sip.c: Found audio description format PCMA for ID 8
[Sep 27 10:28:27] VERBOSE[3257] chan_sip.c: Found audio description format telephone-event for ID 101
[Sep 27 10:28:27] WARNING[3257] chan_sip.c: Insufficient information in SDP (c=)...
[Sep 27 10:28:27] VERBOSE[3257] chan_sip.c:

<--- Reliably Transmitting (NAT) to [2002:c0a8:5702::1]:5060 --->
SIP/2.0 488 Not acceptable here^M
Via: SIP/2.0/UDP [2001:87::2]:5060;branch=z9hG4bK4fefcb354d975a77c0b4953c6bfc06e1;received=2002:c0a8:5702::1;rport=5060^M
From: <sip:1434437208@[2001:87::2]>;tag=as2005694a^M
To: "2437205" <sip:2437205@[2002:c0a8:51a9::1]>;tag=as57091ae6^M
Call-ID: 1eb10c625f4c149e1b0a9dbe487abb78@[2002:c0a8:51a9::1]:5060^M
CSeq: 1 INVITE^M

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