Thanks guys for your reponses. It helped. Taking a cue from your responses, did a bit of digging from resources and this is what it all boils down to: 1) arp_filter works well if the IPs on the interfaces belong to differrent subnets. 2) If the IPs share the same subnet, then arp_announce and arp_ignore does the job. Specifically arp_ignore takes 1 and arp_ignore should take 2 for this situation. Thanks all. Regards, Chaitra On Thu, Jun 26, 2014 at 11:28 PM, Dave Tian <dave.jing.tian@xxxxxxxxx> wrote: > arp_filter may fit better. > > 0 - (default) The kernel can respond to arp requests with addresses > from other interfaces. This may seem wrong but it usually makes > sense, because it increases the chance of successful communication. > IP addresses are owned by the complete host on Linux, not by > particular interfaces. Only for more complex setups like load- > balancing, does this behaviour cause problems. > > > -daveti > > > > On Jun 26, 2014, at 12:38 AM, wei zhang <asuka.com@xxxxxxx> wrote: > > > At 2014-06-26 02:13:30, "Chaitra Ramaiah" <linux.delve@xxxxxxxxx> wrote: >>Hi, >> >> Have a doubt regarding ARP behavior in case of a multi-homed linux box. >> >> Assume there are two interfaces eth0 and eth1 each configured with >>IPs belonging to differrent >> subnets. Say IP1 is assigned to eth0 and IP2 to eth1. Now if an ARP >>request comes on eth0 >> for IP2, what is the behavior on Linux? > > I'm not familiar with networking, but arp_announce and arp_ignore in > Documentation/networking/ip-sysctl.txt maybe the answer! > >> >> Thanks in advance for your answers. >> >>Thanks, >>Chaitra >> >>_______________________________________________ >>Kernelnewbies mailing list >>Kernelnewbies@xxxxxxxxxxxxxxxxx >>http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies > > _______________________________________________ > Kernelnewbies mailing list > Kernelnewbies@xxxxxxxxxxxxxxxxx > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies > > _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
