On Wed, 27 Jun 2001, Jun-ichiro itojun Hagino wrote:
>
> >> => you can use it with the V6ONLY stuff.
> >yes, but on rfc2553-compliant system you cannot have both an AF_INET
> >and an AF_INET6 socket listening on the same port.
>
> (just a picky comment) RFC2553 does not talk about the behavior
> when try to bind(2) to both :: and 0.0.0.0 on the same port. some
> systems reject bind(2) to 0.0.0.0, some does not.
ok. i will try to explain better my thoughts.
i don't want to change RFC2553. i think that V6ONLY is a very good feature
and may be sufficient to achieve a good af-indipendence. however, this
moves the focus on the behaviour of bind and getaddrinfo (which is not
described in detail in RFC2553 - i suppose because there is no consensus).
some implementations of bind(2) allow binding of 0.0.0.0 and :: address
on the same port, and some do not. i think that this may be a problem for
the developers which are working in multi-platform environments.
i'd really like to minimize the negative effect of this behaviour, but i
understand that there is not much that can be done about this.
i hope that we will come to a *BSD-like de-facto standard for the
behaviour of bind and getaddrinfo, but i wonder if having no standard
is even worse than having a bad standard (linux-like).
--
Aequam memento rebus in arduis servare mentem...
Mauro Tortonesi [EMAIL PROTECTED]
Ferrara Linux User Group http://www.ferrara.linux.it
Project6 - IPv6 for Linux http://project6.ferrara.linux.it
--------------------------------------------------------------------
IETF IPng Working Group Mailing List
IPng Home Page: http://playground.sun.com/ipng
FTP archive: ftp://playground.sun.com/pub/ipng
Direct all administrative requests to [EMAIL PROTECTED]
--------------------------------------------------------------------
