routing to a directly attached subnet without an address in this subnet

[David Scheidt]

On Apr 24, 2011, at 4:29 PM, Lionel Fourquaux wrote:

> Dear FreeBSD users,
> 
> Consider an IPv6 router with two interfaces, e.g. em0 and em1.
> em0 has addresses fe80::1234:56ff:fe78:9abc and 2001:db8::1
> em1 has address fe80::1234:56ff:fe78:9abd
> Network 2001:db8::/64 is directly attached to em0, and network 2001:db8:0:1::/64 is directly attached to em1. The default route points to em0. I would like to route packets addressed to 2001:db8:0:1::/64 to interface em1, without allocating an address in 2001:db8:0:1::/64 for em1. (Or to understand why this would be impossible).
> 

Why do you want to do this?  How do you expect the hosts on the attached networks to get packets to you?