Hi,

Quoting bauen1 (2021-04-09 18:58:37)
> Please add support to the unshare chroot backend to unshare the network
> namespace.
> 
> As per debian policy v4.5.1.0 
> https://www.debian.org/doc/debian-policy/ch-source.html#main-building-script-debian-rules:
> 
> > For packages in the main archive, no required targets may attempt network 
> > access, except, via the loopback interface, to services on the build host 
> > that have been started by the build.
> 
> For these and similar scenarios It would be useful if sbuild unshare could be
> configured to prevent network access except for the loopback interface, by
> unsharing the network namespace and bringing up the loopback interface while
> still root.

I don't understand. What bug do you see? The network namespace is already
unshared and only the loopback interface active in the unshare backend:

https://sources.debian.org/src/sbuild/0.81.2/lib/Sbuild/Build.pm/?hl=2470#L2470

Where is the bug?

Thanks!

cheers, josch

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