Subject: [netatalk-admins] NBP-Forward handling broken ?
From: Michael Zuelsdorff (micha@dolbyco.han.de)
Date: Mon Nov 02 1998 - 18:58:01 EST
Hi atalk gurus,
for some time Iīm running a routed net on Linux-2.0.35,
with the latest netatalk + asuns patches.
Zone_1 Zone_2
...Mac1 ......... eth0 eth1 .......... Mac2
Linux
----------------------------------------------------------
With:
eth0 -seed -phase 2 -net 10-19 -addr 10.150 -zone "Zone_1"
eth1 -seed -phase 2 -net 20-29 -addr 20.150 -zone "Zone_2"
nbplkup and interpoll on both Macs tell me:
Linux is registered in Zone_1 but with address 20.150
----------------------------------------------------------
With:
eth1 -seed -phase 2 -net 20-29 -addr 20.150 -zone "Zone_2"
eth0 -seed -phase 2 -net 10-19 -addr 10.150 -zone "Zone_1"
nbplkup and interpoll on both Macs tell me:
Linux is registered in Zone_2 but with address 10.150
----------------------------------------------------------
The only way I found to have 2 zones with Linux registering
in Zone_1 _AND_ address 10.150 is:
eth1 -seed -phase 2 -net 20-29 -addr 20.150 -zone "Zone_1" -zone "Zone_2"
eth0 -seed -phase 2 -net 10-19 -addr 10.150 -zone "Zone_1" -zone "Zone_2"
Is this correct ?
-------------------------------------------------------------------------
ifconfig gives:
eth0 Link encap:10Mbps Ethernet HWaddr 00:00:C0:04:09:5C
inet addr:192.168.100.84 Bcast:192.168.100.95 Mask:255.255.255.224
EtherTalk Phase 2 addr:10/150
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
...
eth1 Link encap:10Mbps Ethernet HWaddr 00:00:C0:E4:0E:BF
inet addr:192.168.100.33 Bcast:192.168.100.63 Mask:255.255.255.224
EtherTalk Phase 2 addr:20/150
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
...
lo Link encap:Local Loopback
inet addr:127.0.0.1 Bcast:127.255.255.255 Mask:255.0.0.0
EtherTalk Phase 2 addr:0/0
UP BROADCAST LOOPBACK RUNNING MTU:3584 Metric:1
--------------------------------------------------------------------------
Well, since the Macs can see each other and there were no other problems,
I didnīt bother too much.
Until I added a Helios EtherShare server to Zone_2. It seems to get
the correct seeding, as it shows up with 20.184 in Zone_2 and is
reachable from both Macs, BUT:
running "vpoll" (kind of nbplkup) just gives me the Linux router,
and EtherShare -- both Macs are hidden!
So whatīs the difference between interpoll, nbplkup and vpoll ?
With a network trace utility I found it:
EtherShare is sending NBP_FWD requests to 10.0 and 20.0 but netatalk
is not able to handle these requests. Actually thereīs some code in
nbp.c of atalkd but these NBP-Forwards do not reach atalkd at all!
The packets get swallowed in ddp.c of the kernel.
I gave it a try and changed ddp.c to handle incoming packets
with node == 0 && net != 0 like "normal" packets addressed to
node 150 (the router). This at least leads to NBP-FWD packets
arriving in atalkd and showing up the Mac in Zone_1. But urrrgh,
itīs ugly hardcoded and my true love is customizing electric guitars...
No, think I better leave it to you. :_)
Michael
_~_ (?)
(o o)'
-- V -^ -----------------------------------------------------------------------
. N . (!) Michael Zuelsdorff
\ i / I don't like LINUX - ' ^ ^ Gruene Riede 5
'. \u/ .' I love it (o o) 31311 Dollbergen
'>X<' / v \ +49 517-792-2113
--- " L " --------------------------------//8'8\\------ micha@dolbyco.han.de --
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