Can't access any https sites, but only....

October 25, 2011 at 21:56:56
Specs: Windows 7
when my Linux VM is running!

How's this for a mystery - last night I noticed that I could no longer access my gmail. Thought it might be down. This morning, I still couldn't access it. Thought I would try comcast, no joy either. Changed computers, no difference. Changed routers, no difference. Bought a new router and started plugging in network cables one at a time. My main machine first, everything works - http and https sites, a second computer, all good. The switch. Fine. Powerline. Still good. Then I plug in a Windows server running a Linux VM. Https sites on all the other machines stop working. Pause the Linux VM, restart router - https sites return to life.

Went to Linux machine, re-enabled ipv6 (the only recent change on the Linux machine was to disable ipv6 since upon a reboot, Linux didn't have an ipv4 address). Restart Linux everything seems fine. A few hours go by, try to connect my wife's new laptop and at that moment wireless seems to stop. Restart router, wireless is back. But lo and behold, https is gone again. Unplug the machine that has the Linux VM, restart router, all is good.

Ever see anything this weird??? Any idea what Linux could be doing to break https on the rest of my network? Sadly my Linux knowledge is somewhat limited. But thanks in advance for your help!!


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October 26, 2011 at 19:46:12
Just some more fun facts about this mystery. Changing browsers doesn't fix the problem - it occurs in Chrome, Firefox, and IE.
Last night I upgraded my VM host from Vista to Windows 7 and updated VMWare from 7.0 to 8.0 - in the hope that an upgrade would fix some random error. No such luck.
Eliminated all static IPs from the network. No joy.
My current theory is that when the Linux system tries to access https, it causes the router to start blocking all https. I base this on the observation that after the upgrades, I am able to have the Linux system on the network for some amount of time before I lose access to https sites. And, if I go to the Linux system and try to access an https site, it will fail and immediately lock up the rest of the system. I then disconnect the Linux system and all my other computers start to function normally.
Strange strange strange...

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October 26, 2011 at 22:27:00

Well, I think. Following the blog article at: I reviewed my ethernet settings on the Linux VM. In particular, I removed from the Name Server 1 and removed "belkin" from the Domain search. Those were some old entries that I hadn't reviewed in a long time. After that everything worked. I could reliably get to https sites on the Linux VM and all other computers.

As for why this happened, I have only one thought. Last week, I had solar panels installed (woohoo) and they installed a powerline adapter to connect their solar inverter to our network (they have no wireless). Since we already had a powerline adapter to handle a dead wireless zone in our house, it was a little messy getting things set up. Once during debugging, I came across a message from the inverter talking about their control panel that was running on Which is exactly the address that was in the name server for linux. ( is my router's address). It's not much of a connection, but it's the only clue I have.

Of course, this all assumes that things are still working in the morning :).

I doubt anyone will ever have this problem - so I post all this only for when I have it again :).

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October 27, 2011 at 07:26:25
And the sad sad news....

Overnight the problem is back. I have disabled the networking from the Linux VM pending some new thoughts.

Anyone out there have any ideas?

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