Hello,
I tested hardware filters on my Ubuntu+82599 development environment and everything seemed to work great. I've further read Intel and ethtool documentation, but I've been unable to find a solution to my next question. I've got a DNS analysis tool and I would like to only accept UDP packets sent to/from 53 port (DNS request/responses) and drop everything else. In your opinion, is by any means possible to implement a hardware filter like this one (drop all non-UDP packets and not sent to 53 port) below:
ethtool --config-ntuple eth4 flow-type !udp4 dst-port !53 action -1
Thanks in advance and best regards,
Manuel Polonio