Bug 824030 - Fails to connect to wireless when no ipv6 in present
Fails to connect to wireless when no ipv6 in present
Product: Fedora
Classification: Fedora
Component: NetworkManager (Show other bugs)
x86_64 Linux
unspecified Severity urgent
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Assigned To: Dan Williams
Fedora Extras Quality Assurance
Depends On:
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Reported: 2012-05-22 11:30 EDT by Bill C. Riemers
Modified: 2013-02-13 08:55 EST (History)
3 users (show)

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Doc Type: Bug Fix
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Last Closed: 2013-02-13 08:55:30 EST
Type: Bug
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Description Bill C. Riemers 2012-05-22 11:30:31 EDT
Description of problem:

I have two wireless networks in my house.  My primary wireless network is running on TomatoUSB and has IPv6 configured.   My secondary is running an old DD-WRT build and does not have IPv6.

Yesterday, I ran "yum update" on my son's laptop, to install the approximately 1GB of fedora updates since the last time I updated his laptop.   Afterwards, the laptop was able to connect to the main wireless router with IPv6 no problem.  But he was in an area of the house with low signal strength.  When ever he tried to connect the secondary router the connection was instantly dropped.  The /var/log/messages file indicated the connection was dropped but did not report a reason.  Since I had just moved around the routers earlier in they day I spent about an hour debugging the connection.  Eventually the problem occured to me.  I edited the wireless connection settings for that connection from "Automatic" to "Ignored" for IPv6.   After that he was able to connect with no problems.

Version-Release number of selected component (if applicable):


How reproducible:
100% on his laptop

Steps to Reproduce:
1. Edit the wireless connection and change IPv6 back to Automatic.  (Note: This is the default setting.)
2. Try to connect to the wireless connection.
Actual results:

Connection instantly fails.

Expected results:

Since I did not have the IPv6 required box checked, the connection should succeed and run without IPv6.

Additional info:

This is a serious problem, in that it will block users from connecting to the average hotspot, as I've yet to see a hotspot that supports IPv6.   I recently gave a laptop to a friend about 1000 miles away.  If he makes the mistake of running a yum update before this is fixed, his network will be broken, and I will have to try and describe the workaround to him over the phone.  I imagine there are many Fedora users who don't have a friend that can do this for them.

I do not know if this happens on all hardware, or purhaps only with select drivers.  If you need me to collect more information I will be happy to do so.  

There is another bug, where if IPv6 was on automatic the wireless connection would drop every 15 minutes or so.  It seems very likely this bug is a result of the fix for that bug.
Comment 1 Fedora End Of Life 2013-01-16 08:13:32 EST
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Comment 2 Fedora End Of Life 2013-02-13 08:55:34 EST
Fedora 16 changed to end-of-life (EOL) status on 2013-02-12. Fedora 16 is 
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