From owner-freebsd-pf@freebsd.org  Tue Oct 10 16:49:37 2017
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From: "Chris H" <bsd-lists@bsdforge.com>
Subject: Re: Specifying a range of ipv6 addresses?
Date: Tue, 10 Oct 2017 09:49:44 -0700
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On Tue, 10 Oct 2017 16:11:23 +0000 Mark Raynsford
<list+org.freebsd.pf@io7m.com> wrote

> Hello.
> 
> What is the syntax for specifying a range of IPv6 addresses in rules?
> 
> I want to write rules of the form:
> 
> pass out log quick on $nic_ppp inet6 proto tcp from
> 2001:db8:8:10::/64 to any port 80 modulate state
> 
> But pf appears to treat 2001:db8:8:10::/64 as a single address (I
> intended it to mean an entire subnet).

While I am filtering with pf(4), I have to admit I haven't used it
to filter IPv6 for awhile. A search for an answer to your question
seemed to indicate the following two links may be of help/interest:
https://www.freebsd.org/doc/handbook/firewalls-pf.html
https://bash.cyberciti.biz/firewall/pf-ipv6-ipv4-firewall-for-freebsd-openbsd-netbsd/

HTH

--Chris

> 
> -- 
> Mark Raynsford | http://www.io7m.com