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Re: How do I keep an inet6 address from being added to an interface?


On Wed, May 5, 2010 at 4:14 PM, Matthew Mondor 
<> wrote:
> On Wed, 5 May 2010 10:10:43 -0700
> Dennis Ferguson <> wrote:
>> Hello,
>> I want to configure an interface up without any protocol addresses
>> being added to (or protocols enabled on) the interface.  I see,
>> however, that the act of typing `ifconfig rtk0 up' results in
>> an ipv6 address being added to the interface, which I assume
>> also enables ipv6 protocol processing.  How do I make it stop
>> doing that?
> Hmm after looking at sysctl(8) net.inet6 stubs and in6_ifattach.c there
> seems to be no option that I see for that in netbsd-5.  It's part of
> the ipv6 standard that interfaces have an automatic link-local address,
> and that address can only be used on the local network, but I guess
> that it could be legitimate for some administrator to not want a
> link-local address configured.
actually, there is a way, `ip6_auto_linklocal', but it is not made
public. Maybe could we expose it in the sysctl tree ?

 - Arnaud

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