Re: arp messages

[Dan Harnett <danh@wzrd.com>]

On Thu, Feb 01, 2001 at 06:16:46PM -0600, Gunnar Wolf wrote:
> > Anyone know the cause of the following messages in dmesg output ?
> > arplookup: unable to enter address for w.x.y.z
> > Box is x86, 2.8, running ipf and ipnat.
> 
> I get very often similar messages with a setup such as two separate
> subnetworks coexist on the same Ethernet segment; your machine is looking
> at the packets that are for it, but cannot understand why an origin
> address of w.x.y.z is in its wire, when there should only be w.x.v.z
> there.

If this is the case, adding a simple static route will avoid any 
further messages.  You would also see lower latency times between 
traffic across the two (or more) subnets.

i.e.

Say you have a host with the IP address 192.168.1.2 which belongs to 
subnet 192.168.1.0/24.  Subnet 192.168.5.0/24 is also on the same 
physical segment.

	route add -net 192.168.5.0 -interface 192.168.1.2

See route(8) for more info.

--
Dan Harnett <danh@wzrd.com>