Date: Fri, 15 Dec 2006 11:09:18 -0800 From: Doug Barton <dougb@FreeBSD.org> To: "Bruce A. Mah" <bmah@freebsd.org> Cc: gnn@freebsd.org, freebsd-current@freebsd.org, re@freebsd.org Subject: Re: Socket problems with latest -current Message-ID: <4582F2DE.8080806@FreeBSD.org> In-Reply-To: <4582D0B0.40108@freebsd.org> References: <457C81E9.7040806@FreeBSD.org> <457D2655.9050500@FreeBSD.org> <m23b7klzjz.wl%gnn@neville-neil.com> <458048DB.2020002@FreeBSD.org> <4582D0B0.40108@freebsd.org>
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Bruce A. Mah wrote:
> If memory serves me right, Doug Barton wrote:
>> gnn@freebsd.org wrote:
>>> At Mon, 11 Dec 2006 01:35:17 -0800,
>>> Doug Barton wrote:
>>>> Doug Barton wrote:
>>>>> With sources cvsup'ed around 20:35 PST on 8 December everything works
>>>>> just fine. With sources cvsup'ed early this morning, 12:42 am PST on
>>>>> 10 December, I'm getting a lot of errors related to sockets:
>>>> I found the problem, it's the change made in version 1.4 of
>>>> rc.d/auto_linklocal. Reverting only that change, and using otherwise
>>>> up to date -current sources allows things to work just fine. Adding
>>>> that change on the same exact system causes the breakage I described
>>>> in my previous message.
>>>>
>>>> It's probably worth mentioning that I exactly fit the criteria from
>>>> the 1.4 commit message, I have INET6 in my kernel, but at the moment I
>>>> have ipv6_enable=no in rc.conf.
>>>>
>>>> This change should be backed out of HEAD and RELENG_6[_2] until the
>>>> cause of this breakage is understood.
>>> I'll take a quick look at this too.
>> Thanks. I installed a totally generic RELENG_6 system from scratch
>> yesterday, and confirmed that the problem I had in -current exists in
>> -stable too. This is a serious issue, given that the default
>> installation will have INET6 in the kernel, but ipv6_enable=no in
>> /etc/defaults/rc.conf.
>>
>> It would be preferable of course to fix the actual problem, but
>> between "it works" and "it is fully RFC compliant," I have to pick the
>> former.
>
> Hey Doug--
>
> I'm trying to reproduce this problem but without success. I did an
> install of 6.2-RC1/i386 from CD into a Parallels VM, then manually
> updated /etc/rc.d/auto_linklocal to version 1.1.2.3.2.1 (same as 1.4 you
> tested with).
I'm not sure if they're relevant or not, but the differences between
what you did and what I did are:
1. I installed on a real box
2. I installed 6.1-RELEASE from CD, then cvsup'ed to RELENG_6.
One other possible difference, I'm on a Core 2 Duo, running i386 SMP.
You might also try enabling named for your testing. The default
configuration should give you a simple local resolver which you can
then test things like 'dig @127.0.0.1 www.yahoo.com'
hth,
Doug
> I'm running a GENERIC kernel with ipv6_enable="NO" set in
> /etc/rc.conf. I set sshd_enable="YES" and sendmail_enable="YES" and
> they both seem to be behaving normally.
>
> vm2# ifconfig
> ed0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
> inet WW.XX.YY.ZZ netmask 0xffffff00 broadcast WW.XX.YY.255
> ether 00:5d:54:14:12:1a
> media: Ethernet autoselect (10baseT/UTP)
> lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
> inet6 fe80::1%lo0 prefixlen 64 scopeid 0x2
> inet6 ::1 prefixlen 128
> inet 127.0.0.1 netmask 0xff000000
>
> I also remember lightly testing this change before it was committed, so
> I'm kind of puzzled by the problems you saw.
>
> Do you have any other information that you think might be useful?
>
> Thanks!
>
> Bruce.
>
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