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VPN DNS (no clients) not working after installing SL; resolver w/ no domain

Unfortunately, Snow Leopard has broken VPN DNS (thanks go out to Apple's QA department).

I've tried several methods of "fixing it", but I end up seeing the following issue (output from scutil --dns):

DNS configuration

resolver #1
domain : xxxx.cc
nameserver[0] : 192.168.0.1
order : 200000

resolver #2
nameserver[0] : 10.0.2.1
nameserver[1] : 10.0.2.2
order : 100000
(...)

Notice how there is no domain on resolver #2. No matter what I do, I can't get one to populate. So, requests to my VPN domain never get to the correct DNS servers and my connections fail. I've tried manually specifying DNS servers and domains for the VPN connection, but the domain still doesn't populate. I've also tried removing all files under /Library/Preferences/SystemConfiguration/ and rebooting, however that only resolved an earlier issue with simply connecting to the VPN endpoint.

Does anyone have any suggestions on how to populate a domain name in my second resolver?

MacBook Pro - Core2 Duo 2.2GHz, Mac OS X (10.6)

Posted on Sep 20, 2009 7:34 AM

Reply
8 replies

Sep 20, 2009 9:36 AM in response to Neflyte

I Hope someone can figure this out. I too an having a similar problem. Its been a three fold issue. First it took me 3 days to install Snow Leopard (Disk kept ejecting during install), but once I got past that (with help from this forum) I got it installed. Once installed SL broke my internet connections. Network preferences said I was connected to my router and online (Skype showed I was connected), but iChat and Safari wouldn't connect. Again I was able to find a work around (not a true fix) on this forum which was, I had to move my system config file to the desktop and reboot, forcing the mac to create a new system config file for the internet. Now it would connect to my router and get on the internet. It did this like I was a brand new client connecting to my router. I had to re enter network key etc. Again internet is now working, however all my network profiles were gone. this now leads me to the 3rd and unresolved issue. I go through and reenter my settings and things seem to work until I get to the VPN. I use the standard PPTN VPN connection and enter my settings exactly the same as before. and it appears to work. It connects with my server, but not my compant "Intranet" Its accepts my company DNS and search domains but does nothing with them. I can't view anything internally. This exact same setup worked flawlessly in 10.5.8. Am I missing something or did I do something wrong? Please help. Need to access company resources or I will have to downgrade back to Leopard.

Thanks,
Nate

Dec 3, 2009 12:00 PM in response to Neflyte

This is exactly the same problem I am experiencing. I just wanted to add in my experience.

I use the built-in VPN PPTP client to connect to work. Immediately after I upgraded to Snow Leopard, things were fine. It seems to be one of the updates since the initial install that has busted things.

Basically, I can connect to the VPN server just fine. However, none of the DNS names for servers inside the network accessed by the VPN will resolve to an address. I can't get at my work computer, or any other servers in that domain.

I looked, and the valid DNS servers for my office are the only 2 DNS servers that show up under the network configuration for the VPN in System Prefs. I have even tried to check the "send all traffic" over the VPN option, and it doesn't seem to change anything. Even in that configuration, I can get to external sites such as google, but I can't get to the internal servers.

I found some discussion on another site about this, regarding changes to how DNS functions under Snow Leopard. It seems that mDnsResponder changes the order of DNS servers from time to time, and that causes the problem. Haven't had much success with this, but here is the link for reference.

http://serverfault.com/questions/64837/dns-name-lookup-was-ssh-not-working-after -snow-leopard-upgrade

VPN DNS (no clients) not working after installing SL; resolver w/ no domain

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