ah! thanks. i misread your mail/read it too fast. my bad. you are right, adding a host-specific route does make the packets appear on the tunnel interface. thanks a lot. now let me see if i have any other problem to report:):) regards, Vikram On Thu, 21 Mar 2002, Vikram wrote: > > > Linux will not proxy arp for an address on interface X if the route for > > that address points back to interface X (That's what you call a routing > > loop). Do have have a host-specific route for the address that points > > somewhere else? If you want to use iptables REDIRECT target to capture > > the traffic, then I think a simple "route add -host b.stanford.edu dev > > lo" will work. > > > one sec...i dont think i gave you the full details. > > i understand your point about the routing loop. my method is something > like this: > > > yes a.stanford.edu does proxy arp for b.stanford.edu though there is no > route setup etc > > however i want to use NAT/iptables and DNAT the packet which comes into > the interface [because of the proxy arp] and tunnel it via another > interface to a new destination . > > of course the tunnel is setup properly and in general the DNAT works > but the packet never seems to come because there never seems to be a > arp-reply from the comp > > hope i was clear. > Vikram > > > > > > > > Vikram wrote: > > > > >Hi, > > > > > >I am having trouble using proxy arp with RH7.2 [linux 2.4.7-10 stock > > >kernel which comes with it] > > > > > >Proxy arp doesnt seem to work. I have hosts a.stanford.edu and > > >b.stanford.edu on the same subnet. b.stanford.edu is no longer there, and > > >a.stanford.edu is set to proxy arp for it....so that it can get its > > >packets [for a specific reason which is not so relevant here,hopefully]. > > > > > >i set the proxy arp entry in a.stanford.edu as follows: > > > > > >arp -Ds b.stanford.edu eth0 pub > > > > > >and then ping b.stanford.edu from some host outside. a tcpdump shows the > > >gateway router doing an arp who-has b.stanford.edu but there is no arp > > >reply at all from a.stanford.edu ?? > > > > > >can anyone tell me what i have missed ? > > > > > > > > > Vikram > > > > > >- > > >: send the line "unsubscribe linux-net" in > > >the body of a message to majordomo@vger.kernel.org > > >More majordomo info at http://vger.kernel.org/majordomo-info.html > > > > > > > > > -- > > Casey Carter > > Casey@Carter.net > > ccarter@uiuc.edu > > AIM: cartec69 > > > > > > > > - > > : send the line "unsubscribe linux-net" in > > the body of a message to majordomo@vger.kernel.org > > More majordomo info at http://vger.kernel.org/majordomo-info.html > > > > - > : send the line "unsubscribe linux-net" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
