Re: To my surprise, even if I removed the ebtables statement, it still works. Care to comment why ?
To quote the ebtables website:
"ebtables tries to provide the bridge firewalling that iptables
cannot provide, namely the filtering of non-IP traffic."
Apparently the "bridge-nf" code allows iptables to see IP
traffic on the bridge. Since the Internet is, by definition, a
network of IP networks, you probably don't need to bridge
any non-IP packets.