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Re: [Rum] IPv6 support

Paul Kyzivat <pkyzivat@alum.mit.edu> Fri, 12 March 2021 16:29 UTC

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References: <AEA553BF-3F7C-402B-B184-99224EC0AFD9@brianrosen.net> <1658FF38-1A4E-462D-BBD0-D3D807655DA3@edvina.net>
From: Paul Kyzivat <pkyzivat@alum.mit.edu>
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Date: Fri, 12 Mar 2021 11:29:06 -0500
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Subject: Re: [Rum] IPv6 support
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On 3/11/21 1:57 AM, Olle E. Johansson wrote:
> 
> 
>> On 10 Mar 2021, at 22:08, Brian Rosen <br@brianrosen.net 
>> <mailto:br@brianrosen.net>> wrote:
>>
>> We’re still having discussions on IPv6 mandatory to support.
>>
>> ISTM that since some very important systems are IPv6 only, and most 
>> ISPs are supporting both, that it’s hard to not require support for 
>> it.  In the meeting Adam discussed using gateways and 4-in-6 support. 
>>  We need to decide what to do.  I point out that many SBCs are capable 
>> of being a fully functional B2BUA and media relay with IPv4 or IPv6 on 
>> either side.  Since it already rewrites addresses for both signaling 
>> and media it has no issues supporting IPv6 on one side and IPv4 on the 
>> other side.  I am checking on support for IPv6 addresses in US 
>> auditing/reporting CDRs and will report my findings shortly.  I would 
>> like to just require both sides to support IPv6, without saying how.
>>
>> Other thoughts?
> IPv6 has to get in.
> 
> Both IETF and the SIP forum has produced documents on dual stack 
> behaviour and there’s a lot of potential
> issues to be aware of there. SIPconnect 2.0 also added some helpful 
> guidelines.

Thanks for the useful pointers.

> https://www.rfc-editor.org/rfc/rfc7984.html 
> <https://www.rfc-editor.org/rfc/rfc7984.html>
> https://www.sipforum.org/activities/technical-wg-overview-and-charter/ipv6-task-group-charter/ 
> <https://www.sipforum.org/activities/technical-wg-overview-and-charter/ipv6-task-group-charter/>
> https://tools.ietf.org/html/draft-klatsky-dispatch-ipv6-impact-ipv4-02 
> <https://tools.ietf.org/html/draft-klatsky-dispatch-ipv6-impact-ipv4-02>
> 
> https://www.sipforum.org/download/sipconnect-technical-recommendation-version-2-0/?wpdmdl=2818 
> <https://www.sipforum.org/download/sipconnect-technical-recommendation-version-2-0/?wpdmdl=2818>

We might want to consider section 15 of the last reference above as a 
pattern that might meet our needs.

	Thanks,
	Paul

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