Re: Trying to add inet6 address w/o inet6 support resets interface configuration

[David Young <dyoung%pobox.com@localhost>]

On Mon, May 19, 2008 at 09:33:01AM -0700, Scott Ellis wrote:
> On Mon, May 19, 2008 9:29 am, David Young wrote:
> > On Sat, May 17, 2008 at 12:44:15PM -0700, Scott Ellis wrote:
> >> I noticed this on the May 5th kernel+userland, and just now got a chance
> >> to try it on today's kernel+userland.
> >>
> >> I always build my systems w/o INET6 (no need for it yet).
> >> Unfortunately, after boot, lo0 isn't configured.  Turns out running
> >> "ifconfig lo0 inet6" (as is done twice in rc.d/network) results in a
> >> SIOCAIFADDR error, that removes the configuration entirely. :-(
> >>
> >> For example...
> >>
> >> intrepid{~}# ifconfig lo0
> >> lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 33648
> >>         inet 127.0.0.1 netmask 0xff000000
> >> intrepid{~}# ifconfig lo0 inet6
> >> lo0: SIOCAIFADDR: Address family not supported by protocol family
> >
> > On intrepid, what domain name does 'inet6' resolve to?
> 
> That's a weird question. :-) I'm using OpenDNS, so I get:
> 
> intrepid{~}% nslookup inet6
> Server:         127.0.0.1
> Address:        127.0.0.1#53
> 
> Non-authoritative answer:
> Name:   inet6.warped.com
> Address: 208.67.219.132
> 
> Is that what you wanted to know?

Yes.  I have just committed a fix for a related bug, but it looks to
me like ifconfig may be working correctly in this case.  How do you
build your userland?  Do you use any MKxxxx or USExxxx options, such as
MKINET6=no or USE_INET6=no?

Dave

-- 
David Young             OJC Technologies
dyoung%ojctech.com@localhost      Urbana, IL * (217) 278-3933 ext 24