Restore IPv6 addresses output
Restore IPv6 addresses output

Before this change, script `examples/browser.py` printed IPv4 only, even with `--v6` argument.
With this change, `examples/browser.py` prints both IPv4 + IPv6 by default, and IPv6 only with `--v6-only` argument.

I took the idea from the fork
https://github.com/ad3angel1s/python-zeroconf/blob/master/examples/browser.py

jstasiak/python-zeroconf