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Re: [Sipping] Question on draft-ietf-sipping-v6-transition-07

"Elwell, John" <john.elwell@siemens-enterprise.com> Fri, 05 February 2010 11:01 UTC

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From: "Elwell, John" <john.elwell@siemens-enterprise.com>
To: "Vijay K. Gurbani" <vkg@bell-labs.com>
Date: Fri, 05 Feb 2010 12:02:12 +0100
Thread-Topic: [Sipping] Question on draft-ietf-sipping-v6-transition-07
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Cc: "sipping@ietf.org" <sipping@ietf.org>
Subject: Re: [Sipping] Question on draft-ietf-sipping-v6-transition-07
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Vijay,

Thanks, but I was concerned that a domain name beginning with "." might be wrong; Taking the SIP ABNF as an example (SDP ABNF isn't so precise), we have:

hostname         =  *( domainlabel "." ) toplabel [ "." ] 

John


> -----Original Message-----
> From: Vijay K. Gurbani [mailto:vkg@bell-labs.com] 
> Sent: 04 February 2010 20:37
> To: Elwell, John
> Cc: sipping@ietf.org
> Subject: Re: [Sipping] Question on draft-ietf-sipping-v6-transition-07
> 
> On 02/03/2010 10:07 AM, Elwell, John wrote:
> > A follow-up question on the statement:
> > "For this, IPv6 implementations MUST use a domain
> >         name within the .invalid DNS top-level domain 
> instead of using
> >         the IPv6 unspecified address (i.e., ::)."
> > Presumably just "invalid" (alone, as opposed to 
> "xxxx.invalid" would be legal?
> 
> John: I think ".invalid" itself suffices, but I will defer to 
> Gonzalo's
> view on this.
> 
> Gonzalo: do you have an opinion.
> 
> 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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