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Date:      Tue, 30 Apr 2002 18:52:04 +0400
From:      Anton Shcherbinin <useperl@fastmail.fm>
To:        Nathan KInkade <nkinkade@dsl-only.com>
Cc:        freebsd-questions@freebsd.org
Subject:   IPv6: how can I get rid of it
Message-ID:  <17231605203.20020430185204@fastmail.fm>
In-Reply-To: <20020429133417.1964fb3b.nkinkade@dsl-only.com>
References:  <743669500.20020427213601@fastmail.fm> <LPBBIGIAAKKEOEJOLEGOOEPMCOAA.barbish@a1poweruser.com> <20020428104538.B83112@wantadilla.lemis.com> <1411696390.20020428231738@fastmail.fm> <20020429133417.1964fb3b.nkinkade@dsl-only.com>

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Tuesday, April 30, 2002, 0:34:17, Nathan KInkade wrote:

>> host.  E. g., with ftp and ftp.freebsd.org :
>> 1) my host queries our DNS server for AAAA record of ftp.freebsd.org
>> 2) query times out in 5 secs
>> 3) the same query
>> 4) query times out in 10 secs
>> 5) the same query
>> 6) query times out in 20 secs
>> 7) the same query
>> 8) query times out in 40 secs
>> 9)  the   same query, *but* for A record; DNS server replies in some ms,
>> and  then    everything   goes   great,   my   host   quickly   connects
>> to ftp.freebsd.org:21 etc.
>> How  can  I  fix  that?
>> The   only  thing I could think of is to disable IPv6 at all. But wait a
>> second:
>> 
>> $ grep -i ipv6_enable /etc/rc* /etc/defaults/*
>> /etc/rc:case ${ipv6_enable} in
>> /etc/defaults/rc.conf:ipv6_enable="NO"          # Set to YES to set up for IPv6.
>>                       ^^^^^^^^^^^^^^^^
>> Does not it mean that IPv6 is already disabled?

> since it hasn't been put out yet, might it work to remove IPV6 from
> the kernel altogether by commenting out the follwing line in your
> kernel config file and then recompiling the kernel? I'm running
> 4.5-stable from releng_4_5 and I've had that line commented out for a
> month or two now and haven't seemed to have any problems. then again,
> i never really had any problems when it was there in the first place
> so this point may be irrelevant?

> options         INET6                   #IPv6 communications protocols

Thanks for the idea of recompiling, Nathan.
I wish I had no problems too. :(
Though  you  advised  to  recompile the kernel, I thought of recompiling
sendmail,  ftp(d),  telnet(d) and some other programs which are compiled
with  something like '-DINET6' option. But I am really a newbie and I do
not  know  whether I break anything just removing '-DINET6' from several
/usr/src/.../Makefile's and running 'make world' then.

I  would like to have the same system as you have (4.5-STABLE, that is).
Yesterday I run

# cvsup -h cvsup2.freebsd.org stable-supfile

where stable-supfile contained the following:

==================================================
*default host=cvsup1.FreeBSD.org
*default base=/usr
*default prefix=/usr
*default release=cvs tag=RELENG_4
*default delete use-rel-suffix

*default compress

src-all
==================================================
Did   I do the right thing? You wrote about '4.5-stable from releng_4_5'
and I am confused now: should I use
*default release=cvs tag=RELENG_4_5
instead of
*default release=cvs tag=RELENG_4
?

I  will have holidays   till   May   13,   but  then I hope I'll be able
to  *properly*  cvsup my sources and recompile them (probably commenting
out '-DINET6' strings in several Makefile's).

-- 
Anton


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