Hello,
Apparently, I'm just not getting some of the tables and chains
concepts enough to make the following scenario work. Any help would be
greatly appreciated.
I have a bridge setup between two computer systems. To be more
detailed, the bridge (br0) is setup on a Linksys WRT54GL across two of
the switch ports that have been VLAN tagged (eth0.1 and eth0.2). In
this setup, Host A and Host B communicate as expected.
What I'd like to do is use iptables or ebtables to.... change the MAC
address of Host B as packets traverse the bridge. Host A will only see
the "changed" MAC address, not the actual one of Host B.
Here's a lame ascii art diagram:
____________________
| |
| br0 |
| |
| eth0.1 eth0.2 |
|__/______________\__|
/ \
/ \ <--- Translate MAC to
/ \ 11:11:11:22:22:22
/ \
/ \
___|___ ___|___
| | | |
| A | | B |
|_______| |_______|
MAC: 00:11:22:33:44:55 MAC:55:44:33:22:11:00
Can this be done? Also, if I don't know the MAC address of either
host, can a rule be written as a "catch-all" to change any MAC that's
plugged in?
Many Thanks.
-tim
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