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Re: Disable IPv6 at startup?

From: Jay Foster <jay at systech dot com>
To: Grant Edwards <grant dot b dot edwards at gmail dot com>
Cc: ecos-discuss at sources dot redhat dot com
Date: Thu, 16 Feb 2012 14:01:19 -0800
Subject: Re: [ECOS] Disable IPv6 at startup?
References: <jhjnjr$eo8$1@dough.gmane.org>
Reply-to: jay at systech dot com

Perhaps the IPV6CTL_AUTO_LINKLOCAL sysctl() (enable CYGPKG_NET_FREEBSD_SYSCTL) might work?

Jay

On 2/16/2012 12:06 PM, Grant Edwards wrote:

What's the simplest/best way to "disable" IPv6 at runtime?

For IPv4 if you never set up any addresses or routes, then that's
"disabled enough" since it won't respond visibly to any IPv4 packets
(AFAICT).

However, for IPv6, there is a default link-local address and a
link-local route -- so even if the user application never sets up any
IPv6 configuration, the device will respond to IPv6 packets (neighbor
discovery, ping, etc).


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