DNS problem using Treo with bluetooth. Fedora Core 3.

[Chris Nolan <chris cenolan com>]

Hi all

I hope somebody can help with this because I'm totally bamboozled. I 
also hope I have found the right list, please redirect me if there is a 
more appropriate place.

Aim: to connect my Treo 650 to the PC via bluetooth so that the Treo can 
use the PC's internet connection.
Problem: I can establish the bluetooth PPP link but I cannot get DNS to 
work on the Treo. From the Treo I can ping the PC, I can ping the local 
DNS server, and I can even ping outside IP addresses, but I cannot get 
any domain names to resolve. I have set the same DNS (10.0.0.2) on the 
Treo as on the PC but it just refuses to work!!

For completeness here are the details of how I am connecting the two 
devices:

1) dund config file /etc/ppp/peers/dun with the following values. Here 
10.0.0.5 is the local IP address of my PC, 10.0.0.10 is the IP of my 
Treo, and 10.0.0.2 (the IP of my router) is the DNS as used in 
/etc/resolv.conf

115200
noauth
local
proxyarp
nodefaultroute
noipx
idle 0
10.0.0.5:10.0.0.10
ms-dns 10.0.0.2
netmask 255.0.0.0
debug

2) Start bluetooth services

# hcid
# sdpd

3) Turn IP forwarding on

# echo 1 > /proc/sys/net/ipv4/ip_forward

4) Start dund

# dund --listen --persist --msdun call dun

5) Now from my Treo I connect to the network over bluetooth. When 
connected /var/log/messages tells me nice things, all looks good:

May  9 21:14:32 localhost udev[6311]: creating device node '/dev/rfcomm0'
May  9 21:14:32 localhost 05-pam_console.dev[6314]: Restoring console 
permissions for /dev/rfcomm0
May  9 21:14:33 localhost dund[6307]: New connection from 00:07:E0:07:05:3E
May  9 21:14:33 localhost pppd[6323]: pppd 2.4.2 started by root, uid 0
May  9 21:14:33 localhost pppd[6323]: Using interface ppp0
May  9 21:14:33 localhost pppd[6323]: Connect: ppp0 <--> /dev/rfcomm0
May  9 21:14:36 localhost pppd[6323]: local  IP address 10.0.0.5
May  9 21:14:36 localhost pppd[6323]: remote IP address 10.0.0.10

6) From the Treo I can ping 10.0.0.5, 10.0.0.2 and also external IP 
addresses like 64.233.183.104 (google) but I cannot get any domain names 
resolved. Ping google.com results in a timeout, Blazer times out, 
Versamail can't find the servers, etc.

I've looked at this problem for 2 days now and just can't figure out 
what is wrong. Currently I have the Treo set up to use automatic DNS, 
but I have also tried manually entering 10.0.0.2 for the DNS and still 
no joy. I also tried dozens of variations on the above  based on 
google-research but again no joy. Any ideas where I've gone wrong?

Thanks for your time, I hope somebody can help!
Chris