Date: Thu, 12 Feb 2009 11:07:28 -0500 From: Steve Bertrand <steve@ibctech.ca> To: Bruce Cran <bruce@cran.org.uk> Cc: freebsd-net@freebsd.org Subject: Re: IPv6 autoconfiguration fails Message-ID: <49944940.2040500@ibctech.ca> In-Reply-To: <20090212154251.5742210a@gluon> References: <20090212005249.10ce416c@gluon> <4994389D.8050203@ibctech.ca> <20090212154251.5742210a@gluon>
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Bruce Cran wrote: > On Thu, 12 Feb 2009 09:56:29 -0500 > Steve Bertrand <steve@ibctech.ca> wrote: > >> Bruce Cran wrote: >>> [forwarding from current@] >>> >>> I recently reinstalled -current on my laptop and have started seeing >>> IPv6 autoconfiguration failing. I have two interfaces re0 and >>> ath0: re0 is plugged in and gets an address via DHCP while I'm not >>> using wireless at the moment so ath0 remains unconfigured. However >>> it seems the IPv6 autoconfiguration tries to use ath0 instead of >>> re0. >> There is a very similar issue over on -questions. >> >> Does it help if you disable rtadv on ath0?: >> >> # ndp -i ath0 -- -accept_rtadv > > It didn't help, but your last message on -questions made me realise I'd > made the classic mistake of enabling a firewall but not allowing inbound > icmp[6] packets. As soon as I'd reloaded the rules things started > working again. Good stuff. Just a note that blocking inbound ICMP will break Path MTU discovery, which, if not considered, can be quite difficult to troubleshoot. Cheers, Stevehome | help
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