This bug is all over the internet. It only exists with BiS games. Every single report Ive seen revolves around ArmA or Dayz. Something in the DayZ or Battle-eye code bombs out DNS.

It isn't a steam server setting issue (I have steam set to max at 250 servers), and it isn't a modem issue (using a non-cable company modem, arguably top of the line). Please fix this code already. I've uninstalled DayZ at this point over this bug. Stop blaming your players and their routers.

http://www.reddit.com/r/dayz/comments/23k1kv/dayz_does_weird_things_to_my_internet/

http://forums.dayzgame.com/index.php?/topic/34670-connecting-to-a-dayz-server-temporarily-disables-my-internet-connection/

http://forums.dayzgame.com/index.php?/topic/166567-dayz-standalone-makes-my-internet-connection-struggle/

Hmmmm... I was having some major problems with my router/network card last spring when I was server hopping for loot... all kinds of errors that I had to use the network troubleshoot utility to fix.

No errors when not connected to a router but directly to the switch in basement.

I play DayZ a lot less now, but occasionally I've had issues where I've needed to run the network troubleshooter to fix DNS and other connectivity issues.

Who knows.

A long time ago when I had a crap router, every time I refreshed the server list for Wolfenstein: ET, my router would restart. Every. Time.

Is there some kind of monitoring software that you can use to see exactly what happens?

Try removing your router from the equation and see if the problem persists.

Hello,

Sorry to hear about your trouble. According to Steam, "This indicates that your router or modem is getting flooded when receiving pings from servers. To resolve this issue:

• Look for a firmware update for your router and/or modem that may resolve the issue.
• If no firmware update is available, set Steam's Internet Connection speed to a lower setting to reduce the speed that the server list populates. This setting can be changed in Steam, in "Steam>Settings" under the "Downloads" tab.
• If this still fails to resolve the issue, you may artificially limit the speed at which the list populates. To do so:
• Go to Start > Run and type in: regedit.
• Navigate to: HKEY_CURRENT_USER\Software\Valve\Steam\.
• Create a new string value registry setting named CafeRate.
• Give the CafeRate regkey a value of 10000 and progressively decrease the value until the issue is resolved. A rate of 3000 should be considered the minimum value.
• If you are still unable to resolve your issue, you should strongly consider replacing your router with a higher-grade model."

Source: https://support.steampowered.com/kb_article.php?ref=4487-YUOC-6922

Regards,
JStewart