Hi guys. I'm back! :)
I have written a netfilter "hook" for the 127 net. I basically setup a
post route hook. I check to see if it is on the 127 net I want. I
think the problem I have is a bit more complicated than I thought.
So "users" of my system, basically applications, will need to talk out
the 127.100 network (I'm going to leave the 127.0.0.1 alone).
So my understanding was this:
1. Write a nf_ip_post_routing filter.
2. Check if the out device my "lo" interface.
3. Check if the dest/src addresses are for the 127.100 net.
** this is where it gets hairy **
4. It's for the 127.100 net.
4a. I need to resolved the IP Address.
4b. I need to add that value to an arp cache.
5. Fill in the Src/Destination Mac addresses along with the source/dest
IP addresses. (because as a loopback device, the src = dest).
Nasty nasty nasty. I've been pulling my hair out all night trying to
figure out how to do steps 4-5.
And of course, this needs to be done by Monday. Oh the joys. So any
help I can get, I would be greatly indebted. (ie. a beer/soda at the
next Linux convention I get to go to. Assuming I get this working :)
thanks.
-stv
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