cswiger at mac.com
Mon Aug 13 11:43:28 PDT 2007
On Aug 13, 2007, at 7:34 AM, Jon Otterholm wrote:
> I have a problem with proxy-arp entries.
> If I add an arp-entry:
> arp -s $hostip $routermac permanent pub only
> the router sends an arp and replies to it's own arp like:
> 15:40:02.074419 arp who-has $hostip tell $hostip
> 15:40:02.074663 arp reply $hostip is-at $routermac (oui Unknown)
> This is a problem because some clients interpret this as an ip-
> address conflict.
Are you sure that your router is issuing the ARPOP_REQUESTS?
Is the entry you've published already listed in "arp -a"?
> In my case the router answers for arp on a bridge where all clients
> have their own member-interface and clients are prohibited to talk
> directly to each other.
> Have I completely misunderstood the proxy-arp function? IMHO the
> router should only answer to arp for $hostip to other clients than
> the one that actually have the ip-address.
I use proxy-arp where I've got a router running IPFW which needs to
forward some IPs on the external/routable subnet to internal RFC-1918
addresses via NAT. I don't use the "only" keyword, but do use
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