I’m searching for help and an opinion-advice for a network project, in which I’m working lately. This requires a Linux machine to be a passive network appliance. Network packets come in from one network interface and come out from another interface ( net–eth0–>Linux PC–eth1–>net) without making any modifications on data. The application, which is going to run on the Linux
Tag: nic
Linux NIC driver: what’s the UDP packet from 0.0.0.0 to 255.255.255.255?
I am playing with rhel6 and rhel 7 NIC driver. The interesting thing is, when I do “ifup eth0” (eth0 is the NIC associated with my driver), I found Linux will try to send two special UDP packets, with source address of 0.0.0.0 and destination address of 255.255.255.255. Can someone help me to understand what’s the purpose of those UDP