Hello All,

Does anyone know of a reason why I cannot send messages from my phone having
an IPv4 address to a SIP server having an IPv6 address?  We will all be
living in a world of dual IPv4/6 networks for quite a while, so I think this
should work.  The function tport_vsend() logs the following error and does
not send the REGISTER message:

tport_vsend(0x9a2408): Address family not supported by protocol with (s=23
*/[fe80::204:23ff:fea7:d60a]:5060)

The REGISTER message follows:

Request-Line: REGISTER sip:[fe80::204:23ff:fea7:d60a]:5060;transport=udp
SIP/2.0
Message Header:
  --Via: SIP/2.0/UDP 192.168.72.77;rport;branch=z9hG4bKB5Hg5X6ycBt6S
  --Max-Forwards: 70
  --From: <sip:4...@[fe80::204:23ff:fea7:d60a]:5060>;tag=B5KNt2rD6XXyc
  --To: <sip:4...@[fe80::204:23ff:fea7:d60a]:5060>;transport=udp
  --Call-ID: 322d9b5e-7c33-122c-44ba-b39cde9aab72
  --CSeq: 111573182 REGISTER
  --Contact: <sip:4...@192.168.72.77:5060;transport=udp>
  --Expires: 3600
  --Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE,
NOTIFY, PRACK, UPDATE, REFER
  --Supported: replaces, callerid, 100rel, resource-priority, path

Jerry


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