I am having a problem that is fully described [here](https://serverfault.com/questions/491274/server-cant-ping-or-connect-to-self), with only a small difference (the log of ifconfig that for me has a "lo" field). I could post an other question that would be nearly the same (same title, etc) but I guess it will be seen as a duplicate.

What is the best way to get an answer to my question ?