on one of the interfaces of the router i wanted to have two IP addresses
for my experimental setup. thats why i used aliasing ....
on router :-
eth0 -> IP Address ->138.34.x.x.
eth0:0 -> IP Address -> 10.1.10.2 (this is the alias)
i also used tcpdump and saw that the router never sends out an arp request
for 10.1.10.1 and the packet is just dropped after it reaches the router.
it works fine when the arp cache of the router has the hwaddress of the
destination. (10.1.10.1) guess thats because of some optimizations in the
kernel routing code.
Regards,
Hormuzd.
On Fri, 30 Jul 1999, Frank van Maarseveen wrote:
> On Fri, Jul 30, 1999 at 03:33:25PM -0400, Hormuzd KHOSRAVI wrote:
> > Hello Linux Gurus,
> > The problem is that the ping works fine from host1 to host2 but from
> > host2 to host1 it only works after the arp cache in all the 3 machines
> > have got updated with the hardware addresses. it doesnt work otherwise.
> >
> > could anyone have a clue what the problem could be ??
> >
> > The answer could be related to the fact that on the router one of the
> > interface address that i am using for routing is configured as an alias.
> The situation you describe is symmetric except for the problem itself
> and the "alias" thing. They might have something to do with each other.
> I don't understand your "alias" remark: the router seems to have two
> interfaces so why do you need IP aliasing?
>
> --
> Frank
>
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