dial tcp: lookup foo on [::1]:53: dial udp [::1]:53: socket: permission denied

Using snap:

```
wms cap -u https://foo/wms -l
Error: Get https://foo/wms?SERVICE=WMS&REQUEST=GetCapabilities: dial tcp: lookup foo on [::1]:53: dial udp [::1]:53: socket: permission denied
```

snap permission problem?
https://github.com/TheThingsNetwork/lorawan-stack/pull/531/files ?