Date: Thu, 10 Oct 2002 22:30:32 +0200 From: Thomas Quinot <thomas@cuivre.fr.eu.org> To: Andy Sparrow <spadger@best.com> Cc: freebsd-stable@FreeBSD.ORG Subject: Re: Setup routing entry for host with a non-local IP address Message-ID: <20021010203032.GA73545@melusine.cuivre.fr.eu.org> In-Reply-To: <20021009221737.0A7AA2A7@CRWdog.demon.co.uk> References: <20021009151733.GA15162@melusine.cuivre.fr.eu.org> <20021009221737.0A7AA2A7@CRWdog.demon.co.uk>
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Le 2002-10-10, Andy Sparrow écrivait :
> > Suppose that on a 4.6.2 machine (hostA), I have an interface xl0
> > with address 10.10.1.2, netmask 255.255.255.0.
> >
> > On that ethernet, I have a host (hostB) that is set up as 10.10.0.1,
> > netmask 255.255.255.0. I need to send a packet from hostA to hostB,
> > and to that effect I would like to set up a static route on hostA
> > indicating that 10.10.0.1 lives on its xl0 interface.
>
> This can't work, not as described.
I know this is impossible. This does not mean that I should not do it.
With a bit of experimentation, I finally found out that I did not even
have to patch route(8). The solution was:
route add -host hostB -link xl0:<hostB-MAC-address> -interface
I was even able to have the kernel do ARP for me:
route add -host hostB -link xl0: -interface -expire 1
> Layer 3 routing only cares about networks, not hosts.
A host is just a kind of very small network.
Thanks to all who responded,
Thomas.
--
Thomas.Quinot@Cuivre.FR.EU.ORG
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