Hi Shuyun,

That's interesting. However, I haven't made any firewall changes yet this method works so either FC5 is different or there is a subtly different way in which both plugins access the network and one sits in front of the firewall while the other doesn't. A lot of DHCP stuff happens over raw sockets and hence doesn't go through IPTables. I had the inverse problem once where I was trying to firewall off out DHCP server from some network ranges and it really didn't turn out to be possible with IP Tables on the DHCP server.

Could you perhaps post the relevant IPTables rules?

Bart.