[avahi] I cannot get autoipd to work (for more than a minute)

[Trent Lloyd]

Hi Jeremy,

The issue here does not really seem to be with avahi-autoipd, it seems something is triggering our network interface to go down (basically what carrier-changed means).  It may be that your network hardware is flaky (switch, cable, card) — or could also be some bug in the driver or network-manager/dhcp.

A quick google suggests people having problems with a all of the above causing similar log messages, so opening a bug on launchpad with a full copy of the log output from syslog is probably your best course of action.  Feel free to also post a copy of syslog here so I can review the exact series of events.

Regards,
Trent

> On 12 Jun 2015, at 6:53 AM, Jeremy Greene <jeremy at ZeeVee.Com> wrote:
> 
> - Ubuntu 14.04 LTS loaded on an Intel NUC 
> - Unplug eth0 from network with dhcp server 
> - As expected, dhcp client withdraws its address and a few seconds later, avahi-autoipd will generate a 169 address. All looks good.
>    —  I do see the syslog messages from autoipd picking a LL address
>    —  the eth0:avahi interface is seen and has the 169 address
> - Connect eth0 directly to my macbook. It also has a 169 address.
> - For maybe a minute, the macbook can ping the ubuntu system (using hostname.local or actual ip addr)
> - Then, the eth0:avahi interface and its LL address goes away
>      -- This seems to follow the syslog message:
>            Jun 11 13:43:54 z4k NetworkManager[700]: <info> (eth0): deactivating device (reason 'carrier-changed') [40]
>      -- There are a bunch of other network manager log messages, all seem to be trying to do somethin to eth0
> - If I then "avahi-autoipd --kill eth0" and then restart it, all is good once again... for a little while.
> - There are no other enabled interfaces (wlan is the only other available and it is disabled)
> - And I do not think I did anything unusual otherwise — pretty typical install (done last night)
> 
> I have spent hours and hours on this... seems pretty basic, so I hope I'm just not doing something really dumb.
> Any help would be really, really appreaciated!!!!
> 
> Jeremy
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