Reply To: Openvpn – blocking dhcp remote dhcp requests with ebtables

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#47142

dr1
Member

I dont know. Looking at the source they seem to have included possibly 3 different methods of communicating. Its my understanding if they use normal udp alot of windows clients wont work.

I did a bit more reading and it seems as though iptables is essentially getting a ‘clone’ packet, thats why the rules are triggering.

Its extra odd that enabling the firewall rules trigged a “send_packet: Operation not permitted” error from dhcpd, though for only some of the packets it send, and yet the client did receive a fresh new ip anyways.

Good information on the subject is not easy to find.