Re: IPv6 networking problems in 14.3

From: Chris Ross <cross+freebsd_at_distal.com>
Date: Wed, 17 Sep 2025 03:24:27 UTC

> On Sep 15, 2025, at 18:54, Chris Ross <cross+freebsd@distal.com> wrote:
> 
>> On Sep 15, 2025, at 15:01, Ronald Klop <ronald-lists@klop.ws> wrote:
>> 
>> Are you able to boot a 14.2 kernel?
>> To split the search space in two. 
> 
> I could do that.  What’s the easy way to get an unpacked 14.2 generic amd64 kernel?

Well, okay, that was something.  I extracted a 14.2-RELEASE /boot/kernel and
was able to boot into it.  The system came up far more properly than it had
under 14.1-RELEASE-p5 tried earlier.  (Resource limits couldn’t be applied
in rc.subr with 14.1).  But, the IPv6 routing problem still exposed itself.
Then, just to confirm, I rebooted into 14.1-RELEASE-p5 again.  This was
where things stopped being useful.  This _also_ failed in the same way
the more recent kernels had.  I don’t _think_ I changed anything between
the last time I tested that, just selecting a different kernel from the
boot menu, but this time it didn’t magically work.  So, I can’t say any
longer that it’s necessarily a regression between 14.1p5 and 14.3.  I
mean, I could try resetting my whole image to a snapshot from 14.1 (ZFS
root), but I don’t think it’s worth that effort.


>> On Sep 15, 2025, at 15:05, Tom Pusateri <pusateri@keehole.org> wrote:
>> 
>> I would try running the 14.3p2 system without the VLAN configuration and a direct connection to the upstream provider hardware (no switch) and see if the problem persists. That will determine if it’s a VLAN issue.
> 
> That would be a bit of work.  I have an available ix port, so I can run a line to the machine
> without vlan. It would still be a VLAN in the switch, because running a direct line is not
> possible without much rewiring and very long cables. 

So this is my next attempt.  I don’t know if I have the energy for the whole
thing tonight, but I’ll start running cables and configuring the switch at least.
See where I get.  :-)

Thanks all for your time, I am just more confused now.

- Chris