> -----Original Message----- > From: Juergen Schoenwaelder > [mailto:j.schoenwael...@jacobs-university.de] > Sent: Tuesday, January 05, 2010 11:08 PM > To: Dan Wing > Cc: 'Jari Arkko'; > draft-ietf-6man-text-addr-representat...@tools.ietf.org; > 'IETF IPv6 Mailing List' > Subject: Re: AD review of draft-ietf-6man-text-addr-representation > > On Tue, Jan 05, 2010 at 11:50:51PM +0100, Dan Wing wrote: > > > Your email from January 28: > > > http://www.ietf.org/mail-archive/web/ipv6/current/msg11215.htm > l, summarized: > > > > 1) Mandate that the text representation is <SOMETHING> > > and never changes after this. > > > > 2) Mandate that the text representation is <SOMETHING> > > but take into account new WKPs. > > > > 3) Mandate that the text representation is <SOMETHING> > > but require that external mechanisms help recognize > > even dynamically assigned IPv4/IPv6 prefixes. > > > > 4) As above, but specify a mandatory external mechanism. > > My main interest is textual comparability of addresses coming from > potentially many different sources. If I can compare addresses safely > only if I know some context information communicated out of band or I > have to configure all sources to produce the same, I feel somewhat > uneasy. My preference thus is 1), I might be OK with 2) if the > frequency of the introduction of new WKPs is very small.
BEHAVE is introducing both (1) a WKP which embeds the IPv4 address in the last 32 bits and (2) allowing networks to use their own 96-bit prefix and embed the IPv4 address in the last 32 bits. Your proposal would prohibit (2) from displaying the IPv4 address in dotted decimal, because of a fear the parsed IPv6 address might be seen or used on another network. Personally, I find this useful. If I'm on my home network and somebody sends me a trace with their IPv6 prefix and some dotted-decimal displayed in the last 32 bits, I know immediately that their tool (running on their network) believed -- through whatever means -- that the last 32 bits was an IPv4 address. -d > /js > > -- > Juergen Schoenwaelder Jacobs University Bremen gGmbH > Phone: +49 421 200 3587 Campus Ring 1, 28759 Bremen, Germany > Fax: +49 421 200 3103 <http://www.jacobs-university.de/> -------------------------------------------------------------------- IETF IPv6 working group mailing list ipv6@ietf.org Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
