Date: Sun, 23 Aug 2009 16:53:35 +0300 From: Lars Eggert <lars.eggert@nokia.com> To: Willem Jan Withagen <wjw@digiware.nl> Cc: "freebsd-ipfw@FreeBSD.org" <freebsd-ipfw@FreeBSD.org> Subject: Re: bin/117214: ipfw(8) fwd with IPv6 treats input as IPv4 Message-ID: <67526C6C-7C00-4D0F-A987-B9AA42868E59@nokia.com> In-Reply-To: <4A8FD99F.1050406@digiware.nl> References: <200908220010.n7M0A419071352@freefall.freebsd.org> <4A8FD99F.1050406@digiware.nl>
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--Apple-Mail-7--2008002 Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes Content-Transfer-Encoding: 7bit Well, one pretty simple (and not always correct) fix would be to assume that if an address has more than 1 colon, it's IPv6. The correct fix is to generate a small flex parser. Lars On 2009-8-22, at 14:42, Willem Jan Withagen wrote: > Lars Eggert wrote: >> The following reply was made to PR bin/117214; it has been noted by >> GNATS. >> >> From: Lars Eggert <lars.eggert@nokia.com> >> To: bug-followup@FreeBSD.org, fabian@wenks.ch >> Cc: >> Subject: Re: bin/117214: ipfw(8) fwd with IPv6 treats input as IPv4 >> Date: Sat, 22 Aug 2009 02:27:44 +0300 >> >> I still see this on 7.2-STABLE: >> >> [root@fit: ~] uname -a >> FreeBSD fit.nokia.com 7.2-STABLE FreeBSD 7.2-STABLE #18: Fri Jun 26 >> 15:43:17 EEST 2009 root@fit.nokia.com:/usr/obj/usr/src/sys/FIT >> i386 >> >> [root@fit: ~] ipfw add 64010 fwd 2001:2060:40:1::1 ip6 from >> 2001:2060:40:1::123,2001:2060:40:1::124 to not >> 2001:0708:0040:fff2::1/64 out >> 64010 fwd 0.0.7.209,2060 ip6 from >> 2001:2060:40:1::123,2001:2060:40:1::124 to not >> 2001:708:40:fff2::/64 out >> >> [root@fit: ~] ipfw show 64010 >> 64010 0 0 fwd 0.0.7.209,2060 ip6 from >> 2001:2060:40:1::123,2001:2060:40:1::124 to not >> 2001:708:40:fff2::/64 out > > The trouble is with the :'s and the fact that parsing doen't really > take > care of multiple :'s. > What I considering is changing it in such a way that one is allowed to > specify ipv6 adresses as [a:bc::d] just like it works in firefox (and > other places) > > Question then is do we use [a:bc::d]/48:53 or [a:bc::d/48]:53? > > --WjW --Apple-Mail-7--2008002--
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