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Date:      Sat, 16 Feb 2008 12:17:19 +1100
From:      Mark Andrews <Mark_Andrews@isc.org>
To:        "Daniel O'Connor" <doconnor@gsoft.com.au>
Cc:        freebsd-stable@freebsd.org, Hajimu UMEMOTO <ume@freebsd.org>
Subject:   Re: Can't delete IPV6 addresses with ifconfig 
Message-ID:  <200802160117.m1G1HJPM018995@drugs.dv.isc.org>
In-Reply-To: Your message of "Sat, 16 Feb 2008 10:12:43 %2B1030." <200802161012.44887.doconnor@gsoft.com.au> 

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> > > I'd like to know what goes on behind the mask.
> > >
> > > I sifted through /etc/rc.d and so on but it's not very clear.
> >
> > 	See sysctl net.inet6.ip6.auto_linklocal
> 
> I actually tried setting that but it had no effect..=20
> 
> I can't find any documentation on it (in inet6 or ip6)

	net.inet6.ip6.auto_linklocal is cleared, based on, ipv6_enable
	really early in the boot process before any interfaces are
	configured (see rcorder).  When the interface is attached
	the kernel will auto configure a link local address if
	net.inet6.ip6.auto_linklocal is still 1.

	grep for auto_linklocal in the kernel sources for all the
	details.

-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark_Andrews@isc.org



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