On 2013/03/13 16:29, Joe Holden wrote: > Strange, I used this setup on an OVH machine a while ago, seemed to work > - perhaps something isn't properly configured at their end properly >
I have a ticket opened with OVH since yesterday to confirm or deny the future of RA on their network. Thankfully this discussion has helped to further understand what *should* be happening and why RA is really more ideal. This is for a new box and I have time to experiment, my old host uses /56 but it's not the right way to do it, IMHO. C. > Schrodinger wrote: > > On 2013/03/13 15:52, Joe Holden wrote: > >> Just use router solicitation to ask for the link-local gateway, that is > >> the "correct" way to do it. > >> > > > > Hi Joe, > > > > If you read some of this thread you'll note that router advertisements > > are being disabled by the hosting provider. While their documentation > > indicates the use of router advertisments this does not solve the issue > > that I get "Operation not permitted" when trying to ping the default > > gateway. > > > > Without ACCEPT_RTADV on re0 FreeBSD does not even perform NEIGHBOUR > > solicitation for 2001:41d0:2:e7ff:ff:ff:ff:ff - presumably because it > > thinks that this is not on the same link as re0. > > > > C. > > > >> Schrodinger wrote: > >>> Damien, > >>> > >>> I appreciate your replies very much, but I'm a subscriber so just reply > >>> to the mailing list. Thanks. > >>> > >>> On 2013/03/13 14:19, Fleuriot Damien wrote: > >>> > >>> [SNARF] > >>> > >>>> These are indeed correct, thanks for clarifying. > >>>> > >>> I thought that's what I said in my first email ;) Sorry for any > >>> confusion. > >>> > >>>> Find below the config I'm using on an old OVH box. > >>>> Said config might be outdated now (as per OVH's guide on setting up IPv6 > >>>> [1]) , however that was at the time the only way to get things working > >>>> properly. > >>>> > >>>> rc.conf > >>>> === > >>>> #Range IPv6: 2001:41D0:2:613b::/64 > >>>> ipv6_enable="YES" > >>>> ipv6_ifconfig_re0="fe80::21c:c0ff:fef3:31fa/64 scopeid 0x1" > >>>> ipv6_ifconfig_re0_alias0="2001:41d0:2:613b::dead:beef/56" > >>>> ipv6_defaultrouter="2001:41d0:2:61ff:ff:ff:ff:ff" > >>>> === > >>>> > >>> You have /56 and this is what I believe to be the incorrect way to get > >>> this to Just Work. I think this assume that anyone else in this /56 is > >>> in the same layer two segment as you.... > >>> > >>>> routing table > >>>> === > >>> [SNARF] > >>>> === > >>>> > >>>> > >>>> > >>>> Notice that said config actually works: > >>>> === > >>>> $ ping6 www.google.com > >>>> PING6(56=40+8+8 bytes) 2001:41d0:2:613b::dead:beef --> > >>>> 2a00:1450:4007:804::1014 > >>>> 16 bytes from 2a00:1450:4007:804::1014, icmp_seq=0 hlim=57 time=4.461 ms > >>>> 16 bytes from 2a00:1450:4007:804::1014, icmp_seq=1 hlim=57 time=4.462 ms > >>>> 16 bytes from 2a00:1450:4007:804::1014, icmp_seq=2 hlim=57 time=4.405 ms > >>>> ^C > >>>> --- www.google.com ping6 statistics --- > >>>> 3 packets transmitted, 3 packets received, 0.0% packet loss > >>>> round-trip min/avg/max/std-dev = 4.405/4.443/4.462/0.027 ms > >>>> === > >>>> > >>>> Either way, you might want to have a look at OVH's guide [1] but in my > >>>> own case, using a /56 was, at the time, the only way to get things > >>>> working in a clean way. > >>>> > >>>> [1] http://help.ovh.com/Ipv4Ipv6#link10 > >>>> > >>> I read this, I made sure to read this and then I read it a second time. > >>> No where does it indicate the use of a /56. I am in the process of a > >>> migration from an old OVH server to a new OVH server. My old box uses > >>> the /56 prefix length "fix" but based on the documentation this is > >>> incorrect and IMO this assumes that anyone else in the /56 is in the > >>> same segment as me and if they are using /64 - well, There Be Dragons. > >>> > >>> Also from the information I have received, router advertisements may be > >>> turned off in the future, my host should simply Neighbour Solicit for > >>> the global scope unicast address of my default gateway. And as pointed > >>> out in previous emails without ACCEPT_RTADV for re0 - FreeBSD does not > >>> perform this action. > >>> > >>> So again, what is the correct way ? I think this is a debate of IPv6 > >>> Protocol vs. IPv6 Policy vs. Network architecture. > >>> > >>> I'll go and get Tina Turner. You get Masterblaster and we'll meet in > >>> Thunderdome. > >>> > >>> C. > > > > _______________________________________________ > freebsd-net@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-net > To unsubscribe, send any mail to "freebsd-net-unsubscr...@freebsd.org" -- +---------------------------------------------------------------+ Quidquid latine dictum sit, altum sonatur. MSN: sch...@hotmail.com ICQ: 112562229 GPG: http://www.konundrum.org/schro.asc
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