Date: Wed, 19 Jun 2019 22:58:04 -0400 From: Robert Huff <roberthuff@rcn.com> To: "Rodney W. Grimes" <freebsd-rwg@gndrsh.dnsmgr.net> Cc: Robert Huff <roberthuff@rcn.com>, freebsd-net <freebsd-net@freebsd.org>, FreeBSD Questions Mailing List <freebsd-questions@freebsd.org>, "Ronald F. Guilmette" <rfg@tristatelogic.com> Subject: Re: Eliminating IPv6 (?) Message-ID: <23818.63036.888460.410557@jerusalem.litteratus.org> In-Reply-To: <201906192322.x5JNMxpK020489@gndrsh.dnsmgr.net> References: <23818.36263.312034.714296@jerusalem.litteratus.org> <201906192322.x5JNMxpK020489@gndrsh.dnsmgr.net>
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Rodney W. Grimes writes: > > Wider question: > > Say I'm running a system with both IPv4 and IPv6 enabled. > > Stuff Happens(tm) and I want to completely disable IPv6 for some > > indefinite but temporary period - not chamge any configuration > > settings or firewall rules, but just have the code finish processing > > current packets (or not) and then ignore further traffic. There will > > be consequences; I'm prepared to accept them. > > Is there a single master switch - a sysctl, perhaps, or something > > in /etc/rc.d - that lets me do that? > > You do raise a very valid point. > > ipfw add 1 deny ipv6 from any to any > > That is about the only "master" switch I can think of that would > be very effective. Ywah ... but that violates the initial constraint. Respectfully, Robert Huff
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