Problems with ppp and 2.1.117+

Vesselin Atanasov (vesselin@bgnet.bg)
Mon, 26 Oct 1998 13:28:52 +0000 (UTC)

Hi. I have a problem with ppp and kernel 2.1.117+. I tried kernels
2.1.117-126, ppp-2.3.5 and net-tools 1.45 on a machine that acts as a
dialup server. The machine assigns dynamic IP-to to our clients. We use
cyclades-z as serial devices with modems attached to them. Each serial
port has an IP assigned to it. When a user connects to serial port N, a
route is added for its IP

Destination Gateway Genmask Flags Metric Ref Use Iface
aaa.bbb.ccc.ddd 0.0.0.0 255.255.255.255 UH 0 0 0 pppQ

Where aaa.bbb.ccc.ddd is the IP of the serial port and pppM is the
dynamically assigned ppp interface.

The problem appears when the pppd for that IP terminates or even is killed
with SIGKILL. The route to that IP is not deleted. When another user logs
on the same tty, a second route to the same IP is added and the routing
table is:

Destination Gateway Genmask Flags Metric Ref Use Iface
aaa.bbb.ccc.ddd 0.0.0.0 255.255.255.255 UH 0 0 0 pppQ
aaa.bbb.ccc.ddd 0.0.0.0 255.255.255.255 UH 0 0 0 pppR

The user that has connected to the server sends packets successfully, but
when a packet is send back to him it is routed through interface pppQ and
never reaches the user.

2.1.108 is the last kernel that works with our configuration.
Any suggestions will be appreciated. Thanks in advance.

vesselin atanasov

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.tux.org/lkml/