1.12.0 error: failed to list interfaces: getifaddrs: Address family not supported by protocol

[dvzrv]

Hi! I'm packaging unbound for Arch Linux.
I am currently trying to upgrade the package to 1.12.0. Unfortunately I am running into serious issues with the service right on start.
With my configuration file, compatible with 1.11.0 I am trying to start unbound.service, but it returns:

unbound[1610946:0] error: failed to list interfaces: getifaddrs: Address family not supported by protocol
unbound[1610946:0] fatal error: could not open ports

I see that f6a527c has changed the behavior of the *interface: settings in the configuration. Unfortunately, this doesn't seem to work out of the box with the systemd unit anymore (or because of another problem?).

Even if I provide interface names to the respective *interface: configuration settings, I get the above error message.

[dvzrv]

Okay, after some investigation I have found the issue.

It seems that the systemd service now requires AF_NETLINK in the RestrictAddressFamilies setting for the aforementioned changes to work and the service not to fail right away.

I'll open a pull request for this.