We are trying to match packets based on the next-hop.
Our configuration is a linux box with one WAN ethernet port (adding a second
WAN ethernet port is not an option) connected to a hub which is connected to
two different internet links. We are using NAT between our LAN and the two
links. The problem is that even though we can equally distribute traffic to
the two links, we can't modify the outbound source address to match the
proper internet link.
We need a POSTROUTING rule to find out the next-hop chosen by 'ip route' and
then change the source IP address to match the associated internet link.
Has anyone tried anything like this, how difficult would it be to write such
a patch???
Any help would be greatly appreciated.
D
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