Vocal's IPv6 and inter-domain

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Dear all,
    I downloaded vocal-1.5.0 from the website and use it on Fedora Core 2. Now I have problems about vocal's IPv6 and SIP multi-domain support.
    First, in an IPv6 network enviroment, I find SipSet can not even send IPv6 UDP packets, while it works well for IPv6 TCP packets.  I modified the "../transport/UdpStack.cxx" code. Now the SipSet can register with VOCAL using IPv6 UDP protocol, and can initiate a call. But the RTP procedure fails. The phenomenon is, the callee can accept a call and send IPv6 RTP packets. But the caller cannot send any RTP packets. Also, on the caller side, I cannot hear anything from the callee, even there are many RTP packets from the callee received.
    
    Second, I wanna try the multi-domain support for VOCAL. That is, I wanna setup two vocal servers, one is for aa.com and another for bb.com. But for a user in domain aa.com who wants to call a user in bb.com, I think some config needs to be done in both servers. Do we have some any guidelines for this problem?

    Anyway, any kind of help and guidance are appreciated.
    Thanks and best regards

Lyon Zhang 
2005-7-19


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