Hello,


Robert Schelander wrote:
> 
> I've got a strange ARP problem since I've installed the new
> apps/tools/libax, new kernel.... everything from the scratch

I helped a friend to do the same and start from scratch with a SuSE 6.2
and the delivered 2.2.10 kernel.

I don't personnally use the AX.25 from 2.2 kernels yet even if i've
already tried it. I'm quite used now to 2.0 AX.25 setups.

I wrote the basic scripts for my friend which set up a KISS interface
with basic IP routing.

I've noticed that ARP won't work. His ARP requests look like this :

[Sat Oct 16 17:16:27 1999]
Port users: AX25: F5OZP->QST <UI> pid=ARP
ARP: len 30 hwtype AX25 prot 0x800 prlen 4 op REQUEST
sender hwaddr F5OZP
target

So it seems that IP related info is corrupted : prot 0x800 and no target
nor sender IP adresses.
This requests never get answered from my 2.0.38 server.
The problem remains if my 2.0.38 (F5KOW) box initiates the ARP request
as even if they're correctly formatted :

[Sun Oct 17 18:11:28 1999]
Port users: AX25: F5KOW-10->QST <UI> pid=ARP
ARP: len 30 hwtype AX25 prot IP op REQUEST
sender IPaddr 44.151.40.40 hwaddr F5KOW-10
target IPaddr 44.151.40.2

My friend's box won't answer by giving its HWAddress.

The only trick to get the machines talk to each other is to manually set
the ARP entry on both machines. When doing that, my friend's box still
won't show a nice "ham" HWAdress but something more similar to an
Ethernet MAC (no Copy/paste available for 'arp -v' on its box).


When this ARP behaviour is "solved" by manually manipulating the ARP
table, i found a problem concerning DG vs. VC, i included the usual
command in the AX.25 script :

echo 1 > /proc/sys/net/ax25/ax0/ip_default_mode

Even if it gets set (checked the /proc files values after entering the
previous command), my friend's Linux box won't talk VC but always DG !
I haven't yet tried to reverse the value form 1 to 0 just in case it
changed from 2.0 or early 2.2 i've personnally tried, but i'm not very
optimistic on the effect it could have...


This is what i had to say/report and i would be glad to here from
someone that had the same problems and manage to really solve them.

Tkanks for taking time to read.
Alex.

-- 
Alexandre Fornieles   |   F-40150 Hossegor
UIN : 1519880         |   AX.25 : f1cay @ f5kow.faqi.fra.eu
-
Software is like sex : It's better when it's Free !

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