[RP-PPPoE] rebuild connection

[Helmut Hullen]

Hallo,

a school in the neighbourhood uses 3 Linux servers (for 3 separate  
buildungs, it's a kind of boarding school) which all make their WAN  
connection via pppoe.

At some times the pppoe connection is rebuilt about every 20 minutes,  
somtimes even faster, especially on one of the three servers.
Another server reconnects never the whole day.

Is it possible that some nasty guy (it's always a guy, never a girl)  
makes something like "router reconnect" for faking/changing the IP  
address?

Viele Gruesse!
Helmut