Re: [Sip] Question regarding conflicting grammar for IPV6 SIP URI andRFC 3986

Brett Tate wrote:
> Greetings,
>  
> Mike's interpretation looks correct.  Is this something that should be 
> fixed?  If so, should the fix be placed within 
> draft-ietf-sip-ipv6-abnf-fix?

What should the fix be?  Mike's claim is that rfc3261
violates rfc3986, yet rfc3986 is internally consistent
in that it requires IPv6 literals to be enclosed in "[" and "]",
viz:

    IP-literal = "[" ( IPv6address / IPvFuture  ) "]"

At the same time, rfc3261 is internally consistent in that
it requires IPv6reference to be enclosed in "[" and "]", viz:

   IPv6reference  =  "[" IPv6address "]"

Furthermore, I don't think the intent is to produce SIP-URI (as
defined in rfc3261) from a URI (as defined in rfc3986), is it?
Note that rfc3986 defines URI as:

   URI = scheme ":" hier-part ...
   heir-part = "//" ...

If this was true, a SIP URI would need to be produced as:

   sip://[2001:db8:10] ...

In other words, I am trying to understand what the exact
problem is before we try to figure out where to put the
fix in...

Thanks,

- vijay
-- 
Vijay K. Gurbani, Bell Laboratories, Alcatel-Lucent
1960 Lucent Lane, Rm. 9C-533, Naperville, Illinois 60566 (USA)
Email: vkg@{alcatel-lucent.com,bell-labs.com,acm.org}
Web:   http://ect.bell-labs.com/who/vkg/
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