pppd mysteriously disconnects
 

hello everyone,

i'm running a linux router (debian potato on a P100)
pppd used pppoe to establish my connection over my cable modem
this all works fine - NAT does work fine too

now here's the funny thing
I recently upgraded to 2.4.14 w/iptables (from 2.2.x w/ipchains) and updated pppoe 1.0 (from potato) to pppoe 3 (with the 2.4 kernel from the bunk archive, people.debian.org/~bunk)
now pppd shuts down after a couple of active hours without, at least for me, a clear reason

I do get thess messages:
pppd: no response to 3 echo-requests
pppd: serial link apears to be disconnected
pppd: connection terminated
pppoe: read (asyncReadFromPPP): Input/Output error

pppd and pppoe both receive signal 15

is this suffiencient?
if so, could anyone tell me how I keep my connection running? it never disconnected back in the days of kernel 2.2.x

thanx
Peter