View Full Version : Strange Networking Problem: Linksys WPC11 with Knoppix 3.2

07-20-2003, 01:51 AM
I have a strange problem for you problem solvers/thinkres.
I have a IBM Thinkpad T23 and using Linksys WPC11 version 3
PC card and a Linksys Wireless broadband router.

I have configured the wlan-ng.opts file with correct SSID
and have no WEP encrytion. I know its bad, I want to get the
conneectivity up first.

Once I unplug and plug the card, the DHCP succeeds and
I get a ip address from the router, ifconfig eth0 shows and when I check the linksys router page from another PC
connected with wire, I can see Knoppix as a DHCP client
and gven the IP address. Also the LINK is not blinking
so cinnection is established.

Now the strange part. I cannot ping nor the other
PC on the network (
If I put ethereal on the knoppix and PC, I can a few packets.

1. If I ping the pc from knoppix (
I can see the arp request from knoppix to come to the pc
and pc replies to ARP. The packet never makes to knoppix ethereal.
2. If I ping to that also never gets reolved.
3. When I Ping the PC to knoppix, arp seems to have resolved because
I can see the ECHO_REQUEST ping packets go out of PC.

All in all, its quite puzzling why the arp does not get resolved
and packets cannot go out of knoppix. netstat -rn
shows a route to 192.168 network as well a default route to
with gateway as

Any idea where the problem might lie. I have the 03-30-03 version of
Knoppix 3.2

Thanks and Happy Networking!

07-20-2003, 02:04 AM
Make sure your WAP has a valid ip (if it is like mine) also does this card work with any other OS? So we can be sure if it is a knoppix problem or a general config problem. For example, on my server (non-knoppix) My dhcpd (v3) config file looks like this:

allow booting;
allow bootp;
default-lease-time 2592000;
max-lease-time 5184000;
ddns-update-style ad-hoc;
subnet netmask {
if substring (option vendor-class-identifier, 0, 9) = "Etherboot" { filename "
etherboot.nbi"; }
else { filename "pxelinux.0"; }
option subnet-mask;
option domain-name-servers;
option routers;
host summer {
hardware ethernet 08:00:69:0a:53:f2;
option host-name "summer";
option domain-name-servers;
option routers;

07-20-2003, 02:31 AM
Yes the WAP has an IP address
I can connect to Internet from other PCs(running Linux, OpenBSD)
through this WAP.
TheWireless card works with Win2K which is installed on the laptop with
Linksys given drivers.
Also the knoppix connects to Internet through the ethernet port.

So it is not a iptables/firewall thing , it looks like.

Any clue ? I really appreciate any pointers.
I really like to get wireless working with Knoppix