Order of DNS servers when using DHCP random after 10.9.3 update

I am operating my local DNS server on my home network for resolving all local IP addresses and names.
The router which connects me to the ouside world is also running a DHCP server serving the local network.
It inherits from outside world two DNS server IP addresses (which cannot be disabled) and has the local DNS server
manualy configured to be "first". I.e. it supplies via DHCP option 6 an ordered list of three DNS servers.
So far so good and all was working well until the 10.9.3 update...
I.e. the local DNS was on top of the list and the others where only queried when it was not responding for some reason.
After the 10.9.3 update every time I do a DHCP renewal the list of DNS servers has a different (random) order.
Not surprisingly if the local DNS isn't on top local lookups will fail.
I have done some packet analysis on the LAN and the DHCP is definitely sending the DNS server IP addresses in the correct order
(see rfc 2132, chapter 3.8).
So why does 10.9.3 get the idea that it has to re-shuffle the order? To "improve the experience"???
And more importantly hot to get rid of it and restore normal behaviour?

This may be a bug. Send a bug report: Bug Reporting - Apple Developer. You can also report it via Apple Feedback, but the first link is better.

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Hello All,
I've been fighting this virtual machine networking problem for over a week now. If anyone has a well-informed suggestion (not a guess) I would appreciate hearing about it.
Here's the problem in a nutshell and then I'll give more details: I'm running Windows 7 Ultimate (64 bit) as my primary (i.e., host) OS. I'm running Windows 7 Home Professional (32 bit) as the guest OS in "Windows Virtual PC" (note that this is *not* the same as "Virtual PC 2007"). If I configure the VM to use my host's wired Ethernet connection, the guest OS can always see the machines on my local network and can always reach the Internet just fine. On the other hand, if I configure the VM to use only my host's wireless connection then the guest OS can still see machines on my local network but CANNOT reach the Internet, except very intermittently (e.g., for maybe 1-2 minutes every hour or so).
I've tried to anticipate the questions you might ask so here is some additional information:
The computer is a Lenovo W500 laptop running Windows 7 Ultimate, 64-bit. The wireless network adapter is an "Intel WiFi Link 5300 AGN".
My Internet connection is via AT&T DSL using a wire2 wireless modem/router.
I have all the updates from Microsoft and Lenovo for this machine. It is 100% up to date with the latest patches and drivers.
I'm running the 64-bit version (or at least I used the 64 bit installer) of "Windows Virtual PC" which I downloaded from this link.
I am *not* running and I did not download "XP Mode".
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I am able to ping an external machines outside my network but only if I use the IP address. If I specify the host name it cannot be resolved.
ARE YOU GETTING THE IMPRRESSION THIS IS A DNS PROBLEM??? It looks like I do not have access to a DNS when using the host's wireless connection.
On the host OS, the "Virtual PC Network Filter Driver" *IS* installed and selected under my "Wireless Network Connection Properties" settings.
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Here's what I get from an ipconfig /all executed on the guest OS:
Windows IP Configuration
   Host Name . . . . . . . . . . . . : Win7_01
   Primary Dns Suffix . . . . . . . :
   Node Type . . . . . . . . . . . . : Broadcast
   IP Routing Enabled. . . . . . . . : No
   WINS Proxy Enabled. . . . . . . . : No
   DNS Suffix Search List. . . . . . : gateway.2wire.net
Ethernet adapter Local Area Connection:
   Connection-specific DNS Suffix . : gateway.2wire.net
   Description . . . . . . . . . . . : Intel 21140-Based PCI Fast Ethernet Adapter (Emulated)
   Physical Address. . . . . . . . . : 00-03-FF-5A-E5-8C
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes
   Link-local IPv6 Address . . . . . : fe80::6452:ad20:724a:4d3a%11(Preferred)
   IPv4 Address. . . . . . . . . . . : 192.168.1.75(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Lease Obtained. . . . . . . . . . : Friday, May 14, 2010 7:22:30 PM
   Lease Expires . . . . . . . . . . : Friday, May 21, 2010 7:22:30 PM
   Default Gateway . . . . . . . . . : 192.168.1.254
   DHCP Server . . . . . . . . . . . : 192.168.1.254
   DHCPv6 IAID . . . . . . . . . . . : 234882047
   DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-13-79-57-1A-00-03-FF-5A-E5-8C
   DNS Servers . . . . . . . . . . . : 192.168.1.254
   NetBIOS over Tcpip. . . . . . . . : Enabled
Tunnel adapter isatap.gateway.2wire.net:
   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix . : gateway.2wire.net
   Description . . . . . . . . . . . : Microsoft ISATAP Adapter
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes
Tunnel adapter Teredo Tunneling Pseudo-Interface:
   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix . :
   Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes
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Windows IP Configuration
   Host Name . . . . . . . . . . . . : LEONA
   Primary Dns Suffix . . . . . . . :
   Node Type . . . . . . . . . . . . : Broadcast
   IP Routing Enabled. . . . . . . . : No
   WINS Proxy Enabled. . . . . . . . : No
   DNS Suffix Search List. . . . . . : gateway.2wire.net
Wireless LAN adapter Wireless Network Connection:
   Connection-specific DNS Suffix . : gateway.2wire.net
   Description . . . . . . . . . . . : Intel(R) WiFi Link 5300 AGN
   Physical Address. . . . . . . . . : 00-21-6A-59-E5-8C
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes
   Link-local IPv6 Address . . . . . : fe80::94b0:4080:c30f:95da%12(Preferred)
   IPv4 Address. . . . . . . . . . . : 192.168.1.78(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Lease Obtained. . . . . . . . . . : Friday, May 14, 2010 6:20:52 PM
   Lease Expires . . . . . . . . . . : Friday, May 21, 2010 6:20:53 PM
   Default Gateway . . . . . . . . . : 192.168.1.254
   DHCP Server . . . . . . . . . . . : 192.168.1.254
   DHCPv6 IAID . . . . . . . . . . . : 218112362
   DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-13-79-34-70-00-22-68-14-2F-CB
   DNS Servers . . . . . . . . . . . : 192.168.1.254
   NetBIOS over Tcpip. . . . . . . . : Enabled
Ethernet adapter Local Area Connection:
   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix . : gateway.2wire.net
   Description . . . . . . . . . . . : Intel(R) 82567LM Gigabit Network Connection
   Physical Address. . . . . . . . . : 00-22-68-14-2F-CB
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes
Tunnel adapter isatap.gateway.2wire.net:
   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix . : gateway.2wire.net
   Description . . . . . . . . . . . : Microsoft ISATAP Adapter
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes
Tunnel adapter Teredo Tunneling Pseudo-Interface:
   Connection-specific DNS Suffix . :
   Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes
   IPv6 Address. . . . . . . . . . . : 2001:0:4137:9e74:3ca6:3214:b4fb:72d4(Preferred)
   Link-local IPv6 Address . . . . . : fe80::3ca6:3214:b4fb:72d4%13(Preferred)
   Default Gateway . . . . . . . . . : ::
   NetBIOS over Tcpip. . . . . . . . : Disabled

Hello,
I am not very familiar wth Microsoft Security Essentials, but believe that it just makes use of the existing Windows Firewall which is present with the operating system.
To me it is odd that the guest OS reports 192.168.1.254 as the IP address for its gateway and DHCP server yet it cannot access them when pinged. Let's try pinging from host to guest (and vice-versa) and see what happens:
From the host OS at 192.168.1.78, try pinging the guest OS at 192.168.1.75.
Then, from the guest OS at 192.168.1.75, trying ping the host OS at 192.168.1.78.
Is each operating system able to ping each other?
Regards,
Aryeh Goretsky
I am a volunteer and neither a Lenovo nor a Microsoft employee. • Dexter is a good dog • Dexter je dobrý pes
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Message was edited by: cyberquixote

Order of DNS servers when using DHCP random after 10.9.3 update

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