Date: Sun, 29 Aug 2010 02:02:19 +0200 From: Bernd Walter <ticso@cicely7.cicely.de> To: Doug Barton <dougb@FreeBSD.org> Cc: freebsd-net@FreeBSD.org, Bernd Walter <ticso@cicely7.cicely.de>, ticso@cicely.de Subject: Re: Problem with link-local addresses on USB interfaces Message-ID: <20100829000218.GI82417@cicely7.cicely.de> In-Reply-To: <4C798CC4.1060904@FreeBSD.org> References: <20100828220844.GE82417@cicely7.cicely.de> <4C798CC4.1060904@FreeBSD.org>
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On Sat, Aug 28, 2010 at 03:25:08PM -0700, Doug Barton wrote: > On 8/28/2010 3:08 PM, Bernd Walter wrote: > >Only the PCI and loopback interface responds to their own link local > >address. > > > >I'm also puzzled about what I need to configure on an interface > >to get an link-local address. > >I've finally put ifconfig_ue0/1="UP" into rc.conf. > > You haven't said what version of FreeBSD you're using, but I'm assuming > -current. The security officer asked to have the default changed so that > link-local addresses are not accessible by default. I implemented a > version of this such that the interface comes up with "ifdisabled" by > default, which prevents all IPv6 traffic, but does not prevent you from > configuring the interface. Ah - Ok - quite unexpected after ~10 years IPv6 on FreeBSD. But now everything looks fine. > You can read in the ifconfig man page how to clear that flag, which will > allow traffic to flow. There are also examples in /etc/defaults/rc.conf > that demonstrate how to set up an ifconfig line to do nothing but > establish a link-local if that's how you want the interface to be > configured. Thank you for the quick response. -- B.Walter <bernd@bwct.de> http://www.bwct.de Modbus/TCP Ethernet I/O Baugruppen, ARM basierte FreeBSD Rechner uvm.
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