Changelog entries for post-release updates

[Stéphane Graber]

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On 01/31/2012 10:04 PM, Scott Kitterman wrote:
> When I install non-security post-release updates, I generally read
> the changelog entries so I have an idea what's changed on my
> system.  It would be nice if there could be some text that actually
> explains what's going on.  I don't find this very helpful:
> 
> ifupdown (0.7~alpha5.1ubuntu5.1) oneiric-proposed; urgency=low
> 
> * Cherry pick fixes for label handling from upstream git (LP:
> #876829): -
> http://anonscm.debian.org/hg/collab-maint/ifupdown/rev/100d6f75b985
>
> 
- - http://anonscm.debian.org/hg/collab-maint/ifupdown/rev/2d171c8da8e5
> -
> http://anonscm.debian.org/hg/collab-maint/ifupdown/rev/f9cef973859e
>
> 
- - http://anonscm.debian.org/hg/collab-maint/ifupdown/rev/80a68bbbd45d
> * Update test suite accordingly.
> 
> I'm sure there are others, but this one I just hit, so I'm
> mentioning it as an example of what I think is a problem that's not
> very rare.  I don't mean to call out any individuals.
> 
> Scott K


Hi Scott,

Sorry for the cryptic changelog. I probably should have explained what
a "label" is at least so that the changelog entry would make more sense.

In this specific example, the issue was ifupdown completely failing to
set the labels on the addresses added to an interface.

auto eth0:0
iface eth0:0 inet static
    address 192.168.254.100
    netmask 255.255.255.0

Where ":0" is the label wouldn't create "eth0:0" in Oneiric but
instead add "192.168.254.100" to the current "eth0" interface. When
bringing down that "label" (so eth0:0), it'd unconfigure the whole
"eth0" interface breaking networking.

The commits cherry-picked form upstream make sure every call to "ip"
have the "label" option set and also fixes "ifdown eth0:0" bringing
"eth0" down.

- -- 
Stéphane Graber
Ubuntu developer
http://www.ubuntu.com
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