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[Openvpn-users] remote dns


  • Subject: [Openvpn-users] remote dns
  • From: Lester Lam <lmklam@xxxxxxxxx>
  • Date: Tue, 1 Jun 2004 12:40:54 -0700 (PDT)

Hi all,

I have successfully setup openvpn for users on the
road to connect to the office network.  However, I run
into problem with remote dns.  

in the config file, i have setup the openvpn
connection to set the remote dns entry.  since i am
running routing instead of bridge, I have also set it
to route all the remote connection thru the openvpn. 
Here's my problem:

after the certificate has been verified, it starts the
route command.  however, there's about 15-30 secs
delay after the connection started but before the
route command take effect.  in this time period, if i
initiate any domain name resolution on the remote
subnet, it returns nothing as the route has not taken
place.  for some reason, the client system (windows)
somehow mark that dns to be unavailable.  so even
after the route has been initiated, domain name
resolution on the remote subnect will still appear to
be unavailable.  

I have tried running ipconfig /flushdns.  it does not
help.  The only command that I found which can solve
the problem is ipconfig /registerdns.  I don't know
why it works, but domain name resolution works right
after running it.

anyone knows the best way to solve this?
I tried to run the ipconfig /registerdns command with
the --up option.  however, i am not sure why my script
(batch file) does not work on windows.  anyone know
how it works?  will it fix the problem?  cuz according
to what I read from the man page, the up option will
be run before the other commands.  does it means it
will be executed before the route option?  

thanks!

Lester


	
		
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