BIND doesn't listen to other loopback addresses

Hi,

I notice BIND's address binding behavior (bug?). I'm running BIND from
git (9.21.10-dev (Development Release) <id:3719cf5>).

My named.conf specifies listen-address to both loopback and WiFi devices:

```
options {
	...
	listen-on-v6 { none; };
	listen-on { 127.0.0.53; 192.168.0.155; };
	...
};
```

Starting the instance, I see that BIND only listens to WiFi address in the
journal:

```
...
Jul 06 06:36:52 archie.me named[554]: listening on IPv4 interface wlp2s0, 192.168.0.155#53
...

```

I have to add dummy interface:

```
$ nmcli connection add type dummy ifname bind53 ipv4.method manual ipv4.addresses 127.0.0.53/32 ipv4.method disabled
```

Restarting BIND, the journal shows that BIND listens to both addresses:

```
...
Jul 06 07:00:42 archie.me named[4906]: listening on IPv4 interface wlp2s0, 192.168.0.155#53
Jul 06 07:00:42 archie.me named[4906]: listening on IPv4 interface bind53, 127.0.0.53#53
...
```

It seems like BIND only listen to addresses that are assigned to existing
network devices, no?

Thanks.

-- 
An old man doll... just what I always wanted! - Clara

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