RH9: ADSL connection drops every ~50 secs if inactive.

Hi all,
I've the following problem:
I've an ADSL ethernet Modem connected in my linux box rh 9.
After configuring ADSL connection with /sbin/adsl-setup, I can perfectly
connect with /sbin/adsl-start, but every 30~50 secs, if the connection
(ppp0) stays inactive, the connection drops, and reactivate itself some
seconds later.

While configuring adsl via /sbin/adsl-setup, at the question "Do you want
the link to come up on demand, or stay up continuously?", I answered 'no',
but the problem is there as well.
Under winz-xp I don't have such problem.
I preface I have a strange network configuration:
the eth1 interface is the NIC connected to eth-modem.
when I'm not connected I have the following configuration:
(Ifconfig output)
eth0 Link encap:Ethernet HWaddr 00:05:1C:0B:62E
inet addr:192.168.1.15 Bcast:192.168.1.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:67 errors:0 dropped:0 overruns:0 carrier:0
collisions:0
RX bytes:0 (0.0 b) TX bytes:11337 (11.0 Kb)

eth1 Link encap:Ethernet HWaddr 000:70:00:BF:86
inet addr:192.168.1.0 Bcast:192.168.1.1 Mask:255.255.255.255
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:48329 errors:0 dropped:0 overruns:0 frame:0
TX packets:47629 errors:0 dropped:0 overruns:0 carrier:0
collisions:0
RX bytes:35146498 (33.5 Mb) TX bytes:5036490 (4.8 Mb)

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:121 errors:0 dropped:0 overruns:0 frame:0
TX packets:121 errors:0 dropped:0 overruns:0 carrier:0
collisions:0
RX bytes:38886 (37.9 Kb) TX bytes:38886 (37.9 Kb)

(route output)
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use
Iface
192.168.1.0 * 255.255.255.0 U 0 0 0 eth0
169.254.0.0 * 255.255.0.0 U 0 0 0 eth1
127.0.0.0 * 255.0.0.0 U 0 0 0 lo


.... while, when I'm connected I have :
(Ifconfig output)
eth0 Link encap:Ethernet HWaddr 00:05:1C:0B:62E
inet addr:192.168.1.15 Bcast:192.168.1.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:67 errors:0 dropped:0 overruns:0 carrier:0
collisions:0
RX bytes:0 (0.0 b) TX bytes:11337 (11.0 Kb)

eth1 Link encap:Ethernet HWaddr 000:70:00:BF:86
inet addr:192.168.1.0 Bcast:192.168.1.1 Mask:255.255.255.255
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:48343 errors:0 dropped:0 overruns:0 frame:0
TX packets:47639 errors:0 dropped:0 overruns:0 carrier:0
collisions:0
RX bytes:35147383 (33.5 Mb) TX bytes:5037090 (4.8 Mb)

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:121 errors:0 dropped:0 overruns:0 frame:0
TX packets:121 errors:0 dropped:0 overruns:0 carrier:0
collisions:0
RX bytes:38886 (37.9 Kb) TX bytes:38886 (37.9 Kb)

ppp0 Link encap:Point-to-Point Protocol
inet addr:80.182.123.105 P-t-P:192.168.100.1
Mask:255.255.255.255
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1492 Metric:1
RX packets:7 errors:0 dropped:0 overruns:0 frame:0
TX packets:3 errors:0 dropped:0 overruns:0 carrier:0
collisions:0
RX bytes:246 (246.0 b) TX bytes:54 (54.0 b)


(route output)
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use
Iface
192.168.100.1 * 255.255.255.255 UH 0 0 0 ppp0
192.168.1.0 * 255.255.255.0 U 0 0 0 eth0
169.254.0.0 * 255.255.0.0 U 0 0 0 eth1
127.0.0.0 * 255.0.0.0 U 0 0 0 lo
default 192.168.100.1 0.0.0.0 UG 0 0 0 ppp0


I feel 169.254.0.0 address is strange (should be ZEROCONF, but I don't know
how it works).

Thnx in advance to anyone will help me.

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Gabolander wrote:
> Hi all,
> I've the following problem:
> I've an ADSL ethernet Modem connected in my linux box rh 9.
> After configuring ADSL connection with /sbin/adsl-setup, I can perfectly
> connect with /sbin/adsl-start, but every 30~50 secs, if the connection
> (ppp0) stays inactive, the connection drops, and reactivate itself some
> seconds later.
>
> [snip]
>

In /etc/ppp/pppoe.conf comment out the line that says PPPOE_TIMEOUT=80

The purpose of PPPOE_TIMEOUT is to time out the client if LCP (layer 2)
echo requests aren't answered for 80 seconds. Unfortunately in some
cases RP seems to timeout if IP (layer 3) is inactive for that long,.
even when layer 2 is chatting along with echo-request/echo-reply just fine.

I had to do this with RH 7.3. FWIW I haven't had to do this with RH9.
I use the genuine RP software from the RP site, not the RH hack of the
RP software.

HTH