Asynchronous PPPoE

A month ago I had problems with my bridged PPPoE DSL connection. Every few minutes the connection would crash and I'd be reassigned an IP. It seems to be a problem only when under a heavy load with lots of open connections. Some of the errors I was seeing looked like this:


Dec 17 08:43:03 server pppd[7005]: Protocol-Reject for unsupported protocol 0xee0a
Dec 17 08:43:35 server pppd[7005]: Protocol-Reject for unsupported protocol 0xe6bd
Dec 17 08:44:00 server pppd[7005]: Protocol-Reject for unsupported protocol 0xb615
Dec 17 08:46:04 server pppoe[7006]: too few characters read from PPP (syncReadFromPPP)
Dec 17 08:46:04 server pppoe[7006]: Sent PADT
Dec 17 08:46:04 server pppd[7005]: Modem hangup
Dec 17 08:46:04 server pppd[7005]: Connect time 4.9 minutes.
Dec 17 08:46:04 server pppd[7005]: Sent 283984133 bytes, received 222851068 bytes.
Dec 17 08:46:04 server pppd[7005]: Connection terminated.
Dec 17 08:46:04 server pppoe-connect: PPPoE connection lost; attempting re-connection.


The simple solution was to turn off the synchronous flag. I use Fedora so I added
SYNCHRONOUS=no
to /etc/sysconfig/network-scripts-ifcfg-ppp0. Now everything works great!

[Update] It looks like this is caused by a bug in Fedora 10.