Re: tlug: 2 Problems with Kernel 2.2.1 upgrade

[Neil Booth <NeilB@example.com>]

Stephen J. Turnbull wrote:

> One other thing, for some reason 2.2 kernels (or maybe it's
> pcmcia-cs-3.0.8?) seem to automatically set default routes and there
> is often a problem (SIOADDR or something like that) with explicit
> route commands.  Check your syslog for routing errors, maybe?  But
> this doesn't seem to cause me any grief.

I've tried again under kernel 2.2.2 this time, but still no luck getting
PPP to work.

Here is the comparison of a route, netstat and ifconfig under 2.0.36
which works and 2.2.2 which doesn't. The only difference in setup is the
kernel; I boot the same disk for both.

Here's 2.2.2:

[root@example.com /root]# route
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use
Iface
hiperarc1-ariak *               255.255.255.255 UH    0      0        0
ppp0
127.0.0.0       *               255.0.0.0       U     0      0        0
lo
default         hiperarc1-ariak 0.0.0.0         UG    0      0        0
ppp0
[root@example.com /root]# netstat -nr
Kernel IP routing table
Destination     Gateway         Genmask         Flags   MSS Window  irtt
Iface
203.216.40.12   0.0.0.0         255.255.255.255 UH        0 0          0
ppp0
127.0.0.0       0.0.0.0         255.0.0.0       U         0 0          0
lo
0.0.0.0         203.216.40.12   0.0.0.0         UG        0 0          0
ppp0
[root@example.com /root]# ifconfig ppp0
ppp0      Link encap:Point-to-Point Protocol  
          inet addr:203.216.42.136  P-t-P:203.216.40.12 
Mask:255.255.255.255
          UP POINTOPOINT RUNNING NOARP MULTICAST  MTU:1514  Metric:1
          RX packets:6 errors:0 dropped:0 overruns:0 frame:0
          TX packets:7 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:10 

Here's the same under 2.0.36:

[root@example.com /root]# route
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use
Iface
hiperarc1-ariak *               255.255.255.255 UH    0      0        0
ppp0
127.0.0.0       *               255.0.0.0       U     0      0        0
lo
default         hiperarc1-ariak 0.0.0.0         UG    0      0        1
ppp0
[root@example.com /root]# netstat -nr
Kernel IP routing table
Destination     Gateway         Genmask         Flags   MSS Window  irtt
Iface
203.216.40.12   0.0.0.0         255.255.255.255 UH     1514 0          0
ppp0
127.0.0.0       0.0.0.0         255.0.0.0       U      3584 0          0
lo
0.0.0.0         203.216.40.12   0.0.0.0         UG     1514 0          0
ppp0
[root@example.com /root]# ifconfig ppp0
ppp0      Link encap:Point-to-Point Protocol  
          inet addr:203.216.42.200  P-t-P:203.216.40.12 
Mask:255.255.255.0
          UP POINTOPOINT RUNNING  MTU:1514  Metric:1
          RX packets:8 errors:0 dropped:0 overruns:0 frame:0
          TX packets:9 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 
          Memory:5bdf038-5bdfc20 

Note the difference in the ppp0 config (2.0.36 has NOARP and MULTICAST
unlike 2.2.2), 2.0.36 has the default route usage count as 1 whereas
2.2.2 doesn't. Also, the MSS entries are zeroed under 2.2.2. I'm not
really sure what all this means.

ping works fine; so e.g. Netscape says "www.slashdot.org contacted,
waiting for reply" and the modem appears to be actually receiving data.
It just seems to go in the bitbucket though, and Netscape times out.

If anyone has any hints, I'd really appreciate this. This is preventing
me from running 2.2.2.

Cheers,

Neil.
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