I have a DHCP server on a host but also want to run openHAB which has
the ability to listen on port 6767 for DHCP requests. The docs say to
execute the following commands to replicate the packets on to port 6767:
iptables -A PREROUTING -t mangle -p udp ! -s 127.0.0.1 --dport 67 -j TEE
--gateway 127.0.0.1
iptables -A OUTPUT -t nat -p udp -s 127.0.0.1/32 --dport 67 -j DNAT --to
127.0.0.1:6767
When I do this though, I see the mangle rule packet count start to
skyrocket and the nat rule never sees any packets. When I try a slight
variation below, I prevent the skyrocketing packet count but the nat
rule still never kicks in.
iptables -A PREROUTING -t mangle -p udp ! -i lo --dport 67 -j TEE
--gateway 127.0.0.1
I have tried various combinations of ip_forward and route_localnet
I hope this is the right mailing list and someone could offer some help.
I can provide nf trace logs if needed, or any other kind of info.
Thanks,
Mike
