Thanks, that seems to make sense to me. John > -----Original Message----- > From: Kevin P. Fleming [mailto:kpfleming@xxxxxxxxxx] > Sent: 05 February 2010 15:03 > To: Elwell, John > Cc: Vijay K. Gurbani; sipping@xxxxxxxx > Subject: Re: [Sipping] Question on draft-ietf-sipping-v6-transition-07 > > Elwell, John wrote: > > 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 [ "." ] > > That would in fact be wrong, domain names cannot begin with '.'. In > addition, I'd recommend against allowing an 'invalid' name > that does not > contain '.', because many systems (including my laptop) are configured > with default DNS search domains that are searched when names that > contain only one component are resolved. 'invalid' in my case would > search in at least two domains for 'invalid.xxx.yyy', which is not > helpful in the context of this draft. > > Explicitly specifying 'this.is.invalid' or something similar > seems to be > prudent in this case. > > -- > Kevin P. Fleming > Digium, Inc. | Director of Software Technologies > 445 Jan Davis Drive NW - Huntsville, AL 35806 - USA > skype: kpfleming | jabber: kpfleming@xxxxxxxxxx > Check us out at www.digium.com & www.asterisk.org > _______________________________________________ Sipping mailing list https://www.ietf.org/mailman/listinfo/sipping This list is for NEW development of the application of SIP Use sip-implementors@xxxxxxxxxxxxxxx for questions on current sip Use sip@xxxxxxxx for new developments of core SIP
