[Pkg-utopia-maintainers] Bug#755202: Bug#755202: network-manager: keeps creating and using new connection "eth0" that does not work

[Michael Biebl]

Am 13.03.2015 um 22:18 schrieb Stefano Zacchiroli:
> On Fri, Mar 13, 2015 at 10:06:42PM +0100, Michael Biebl wrote:
>> So, it would be immensly helpful, if someone can provide me with a
>> detailed description of his network setup (what interfaces are managed
>> by NetworkManager, what by ifupdown, what's the individual configuration
>> and available interfaces, etc.).
>> Then the exact circumstances, when this happens and if this happens
>> reliably and how it can be triggered.
> 
> Hey Michael, I've since then commented out the following lines in my
> /etc/network/interfaces:
> 
>   # # The primary network interface
>   # allow-hotplug eth0
>   # iface eth0 inet dhcp
>   # # This is an autoconfigured IPv6 interface
>   # iface eth0 inet6 auto
> 
> after doing that I've not been able to reproduce this bug.
> 
> Not sure if this info helps or not...
> 

Well, this sounds like you have an eth0 configuration, which is enabled
always, even if there is not link. Eventually, dhclient times out and
you get a link-local address and most likely, the default route is set
via eth0.

I don't see that as a bug in NM, or do you disagree?
On could argue, that this is a misconfiguration and you should use
ifplugd to activate your connection when a link is available, or teach
ifup to fail if there is no link (or simply use NM for eth0 as well).


Michael


-- 
Why is it that all of the instruments seeking intelligent life in the
universe are pointed away from Earth?

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