How to block facebook access

Ultima ultima1252 at
Sun Aug 20 19:05:17 UTC 2017

Can also redirect requests to port 53 to your dns resolver. This is a
simple task on ipv4
but ipv6 is significantly more difficult to do so. Still haven't figured
out how to do this
properly on ipv6 but an easy solution is just blocking ipv6 dns requests.

On Sun, Aug 20, 2017 at 11:49 AM, John Levine <johnl at> wrote:

> In article <20170820153621.GA9420 at slackbox.erewhon.home> you write:
> >I would hazard a guess that *most* facebook users wouldn't be technically
> >savvy enough to use an IP-adres.
> Even if they are, FB will redirect them to a name.  They'd either have
> to use an external DNS cache or a VPN.  I suppose one could preemptively
> block port 53 requests out to and
> R's,
> John
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