❦ 29 septembre 2016 12:15 +0200, Vincent Bernat <ber...@debian.org> :

>> dnsmasq 21412 nobody   11u     IPv4            1438842      0t0     UDP 
>> *:38279
>>
>> So, it doesn't really seem to be related to the original bug
>> report. Sorry for the noise, I'll dig more and open another bug report
>> if needed.
>
> Well, in fact, it seems that's the same problem. The problem is that
> dnsmasq as configured by Network Manager uses
> --bind-interfaces. Therefore, the above socket is in fact bound to an
> interface. This can be checked with "ss --info --extended". So, when the
> interface disappear, we are not able to send receive using the socket
> anymore. Configuration through DBus doesn't update the interface the
> socket is bound to.

Here are some pointers:

 https://bugzilla.redhat.com/show_bug.cgi?id=1367772
 
http://thekelleys.org.uk/gitweb/?p=dnsmasq.git;a=commitdiff;h=2675f2061525bc954be14988d64384b74aa7bf8b

I am testing the above patch myself. Will tell if it works.
-- 
Don't use conditional branches as a substitute for a logical expression.
            - The Elements of Programming Style (Kernighan & Plauger)

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