Destination Host Unreachable!!!!

hi every body

I want setup an ad-hoc wireless network between my PC (opensuse 11.2)
and my PDA (window mobile 6.1) .

after some search and try, I setup ad-hoc by yast network seting,
every thing is ok and I my PDA found PC essid and connet to it,
but nor PC and PDA can ping each other and ping command just say :
“Destination Host Unreachable”

I have a Linksys usb wifi adapter that correctly work in windows and
I can connect and ping and share.

opensuse find and work fine with my Linksys wifi adapter
(i can see with lsusb and ifconfig )

the route seems ok:

#route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface U 0 0 0 vmnet1 U 0 0 0 eth0 U 0 0 0 vmnet8 U 0 0 0 wlan0 U 0 0 0 eth0 U 0 0 0 lo UG 0 0 0 eth0

do i need change iptable or problem is other?

please help me I’ll be >:(

Check that your pda is on the same network address as the rest of your network: 192.168.1.x or the 10.10.10.x.
Usually you would have eth0 and wlan0 on the same network and not on different networks, so there is something strange in your wireless setup.

whych, tnx for your reply

both pda ( /24) and pc ( /24) on the same network,
i’m compeletly confuseeeee

OK, then to sync the pda you nned to disconnect the 192.168 network on eth0 and just have wlan0 running.
Are you using ifup (traditional) or network manager?

Also, your subnet mask for the 10.10 net is wrong it’s not /24.

If you are setting wlan manually and not via dhcp, rather use the 192.168.2.x or 3.x - you don’t need a class a network.

i use traditional mode
and first i use get ip via dhcp and when both
devices can’t ping each other i use static ip range (!!!)
i use 172.16.xx , 192.168.xx and 10.xx and not of all work for me]

I think this problem came from an iptables policies and chains!!!
but i don’t know what policy block ping packets. what’s your idea?