Date: Wed, 18 Apr 2007 19:50:09 +0100 From: "Bruce M. Simpson" <bms@incunabulum.net> To: Alan Garfield <alan@fromorbit.com> Cc: freebsd-net@freebsd.org Subject: Re: fake MAC addresses and ARP Message-ID: <46266861.8040907@incunabulum.net> In-Reply-To: <1176781003.6367.12.camel@hiro.auspc.com.au>
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Some ideas: 1. Enable IFF_STATICARP on your interface to stop ARP sending out to resolve the IP/MAC address tuple. 2. Consider that you can deal with resolution in userland (RTF_RESOLVE) but this involves changing the net's entry (route) in the FTE. You'd then process RTM_RESOLVE messages and install routes yourself -- it's possible to do arp in userland with this. 3. Try to avoid using the 169.254.0.0/16 prefix as it has a specific meaning. We don't implement interface scoping for these addresses yet so the FTE can't deal with them appearing more than once for the same subnet; it may be easier to pick something else -- note that if ARP is enabled for an interface with one of these addresses, all ARP traffic is forced to be broadcast as per the zeroconf RFCs. BMShome | help
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