Troubles with connecting Windows client and with the bridging.

From: Dmitri Gofmekler (
Date: 2002-01-24 12:50:51 UTC

Hello All,

I'm urgently need help.
Here's my story:

I found a HOWTO written by Jon Harsem and done exactly what written there.

Compaq WL200
Pentium PRO based PC
RedHat 7.2
Kernel-source 4.17-0.2 (from RawHide distribution, because there was a problem compiling pcmcia-cs with updated 2.4.9) pcmcia-cs 3.1.31
Prism2 2002-01-03

I have compiled the kernel without pcmcia support, with bridging support and with wireless support without any wireless-related modules. The card was recognized and initialized. In Windows based PC is installed the same WL200 card with the latest drivers got from Compaq. If I turn (using /etc/pcmcia/wireless.conf and iwconfig scheme <scheme> command) info the AdHoc mode, the Windows client (configured for 802.11b AdHoc mode) is able to connect and ping linux station. If linux is configured in "Managed" or "Master" mode and Windows - in "Infrastructure" mode - nothing happens. Is there any success stroies with Linux software AP and Compaq WL200 cards? Can someone point me to the right way?

The second problem is a bridge. Is it not working for me... The story: I got Linux-side WL200 configured in Ad-Hoc mode and Windows - in 802.11b AdHoc mode. TCP/IP working fine. Afer I've turn linux station into the bridge:

brctl addbr br0
brctl addif br0 eth0
brctl addif br0 wlan0
ifconfig eth0
ifocnfig wlan0
ifconfig br0 up

Now the interesting situation. Windows box can not be pinged neither from the wired Ethernet nor from Linux box (bridge). From the Windows machine I'm unable to ping both Linux-box and all wired LAN. But when I typed arp -a before trying to ping it was empty and the ARP table was filled with the correct
MAC addresses of wired LAN machines. So it seems that ARP packets goes thru the bridge but IP packets - no. Is there any advices?

Thanks in advance for all answers,
Sincerely yours,
Dmitri Gofmekler.

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