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IDProjectCategoryView StatusDate SubmittedLast Update
0001188PacketFenceupstreampublic2011-02-21 13:582011-03-03 15:25
Assigned Toobilodeau 
PlatformOSOS Version
Product Version 
Target VersionFixed in Version2.1.0 
Summary0001188: Ubuntu / NetworkManager / Linux kernel doesn't do DHCP after a 2 second link down
DescriptionWe got report of this on the mailing list and we independently experienced it in our lab.

A 2 sec down / up is not long enough for Ubuntu to detect a link change and perform DHCP again.

I'm not sure why we haven't heard about this sooner.. Did it used to work? Is it a regression or not? If so, what in component?

I would think that it is in NetworkManager but it could be the kernel that is taking it's time to pass the information to userland.

The problem with raising the delay from 2 to 6 (for ex.) is that we affect all operating systems, even those who could be bounced quicker.
TagsNo tags attached.
fixed in git revision
fixed in mtn revision48e606bbc24225f730070db71166690c0c3b558f
Attached Files

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-  Notes
obilodeau (reporter)
2011-02-21 14:00

work around for now: edit sbin/pfsetvlan on line 1625 (as of 2.0.1) and change sleep(2); with sleep(6);

things should work afterwards
obilodeau (reporter)
2011-03-01 17:42

Default bounce duration is now 4 seconds long which is enough for Ubuntu to see the linkdown. Also the value is configurable with bounce_duration under [vlan] in conf/pf.conf. Default value in conf/pf.conf.defaults.

- Issue History
Date Modified Username Field Change
2011-02-21 13:58 obilodeau New Issue
2011-02-21 13:58 obilodeau Status new => assigned
2011-02-21 13:58 obilodeau Assigned To => obilodeau
2011-02-21 14:00 obilodeau Note Added: 0001873
2011-03-01 17:42 obilodeau mtn revision => 48e606bbc24225f730070db71166690c0c3b558f
2011-03-01 17:42 obilodeau Note Added: 0001890
2011-03-01 17:42 obilodeau Status assigned => resolved
2011-03-01 17:42 obilodeau Fixed in Version => 2.0.2
2011-03-01 17:42 obilodeau Resolution open => fixed
2011-03-03 15:20 obilodeau Fixed in Version 2.0.2 => 2.1.0
2011-03-03 15:25 obilodeau Status resolved => closed

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