Ok, I got it like this
client .. -> no-ip ethernet device ( pppoe server ) ether 1 -> ether2 ( 10.233.0.3 ) link to dhcp server -> eth0 (10.233.0.2 ) ...
I do dhcrelay -i eth0 10.233.0.2 -d ( to see what it does ) ..
- it shows that it's forwarding the request to the right place ..
- the main dhcp server shows it trying to discover ( via eth0 )
- the dhcp server offers ip ( via eth0 ) to mac .. not good because I need it to reply via ip ! ( the mac address doesn't exist directly to eth0 ) ..
what's wrong and what do I have to do ?