[coLinux-users] unable to get slirp working

[Hari K. D. <har...@gm...>]

I am running CentOS 5.3 via colinux on a laptop running XP Prof. I
have been connecting to internet via a tuntap adapter via ICS on my
wifi, but I need to step up a little bit to make my life easier,
especially with VPN.

I went through http://colinux.wikia.com/wiki/Network and it seems like
slirp is my best bet and the easiest, but I can't get it working at
all. I have this set in the command line config file:

eth0=slirp

On the linux side, I used dhcp and after a reboot, I do get the right
values for ip (10.0.2.15) and gateway (10.0.2.2). I can ping to
10.0.2.2 and 10.0.2.3 as well, but I can't ping to anything outside,
even though their ip gets resolved.

I do have a workaround (I think) for now, since I was able to get
pcap-bridge working (albeit, with great difficulty) on my wifi and for
VPN, I am using ICS over VPN adapter. The idea is that when in the
office, the pcap-bridge should provide both internet and intranet
access, while at home, pcap-bridge would provide internet while tuntap
will provide intranet (when VPN is up). In both instances, tuntap will
also serve to provide a fast local access between XP and linux. I have
verified this from my home, but won't be able to verify until some
time next week when I will be in the office.

One issue with the above setup that I can't figure out right now is
the name resolution for VPN. I am able to access using ip addresses
(after adding an explicit route), but name resolution fails, even
though I edited /etc/resolve.conf to add the search domains and
nameserver ips (that I obtained from my VPN adapter on windows side).
I guess I can live with being able to access by ip addresses (I could
add some of these that I frequently access to /etc/hosts), but I am
hoping that getting slirp working will not only simplify the setup, it
will also solve the name resolution issue.

I would appreciate any help in troubleshooting the slirp issue (or
even the name resolution).

PS: In case anyone is looking to get pcap-bridge to work for wifi on a
HP EliteBook 6930p, this is what I had to do (again, I am using
centos):
- Use the same wifi MAC address on both the linux and windows side
- Enable nopromisc mode
Ex:
Command line config file:
eth2=pcap-bridge,"Wireless Network Connection",<wifi mac>,nopromisc
/etc/sysconfig/network-scripts/ifcfg-eth2:
HWADDR=<wifi mac>