Problem with VLAN config and traffic after 10.1-R -> 10.3-R-p5 Upgrade?

[Michael Gmelin]

On Thu, 23 Jun 2016 14:04:13 +0100
Karl Pielorz <kpielorz_lst at tdx.co.uk> wrote:

> --On 23 June 2016 13:32 +0100 Matthew Seaman <matthew at FreeBSD.org>
> wrote:
> 
> > I use a similar config with vlans over lagg.  While I haven't seen
> > exactly your problem, I did see one instance of the vlan interface
> > coming up with an all-zero MAC address (out of about 10 systems
> > upgraded to 10.3-RELEASE so far).  See PR207701 -- my workaround
> > was to explicitly set a MAC address for the vlan i/f.  
> 
> Hi,
> 
> We seem to always have a MAC address on the lagg - so I don't think
> we've hit that issue.
> 
> > We're configuring the vlan interfaces slightly differently so that
> > they end up with a name like 'vlan123' rather than 'lagg0.123' --
> > if that difference is significant then it maybe gives you an
> > alternate workaround to running your interfaces promiscuously.  
> 
> Any chance you can send us a snippet of how they're setup in
> '/etc/rc.conf' if it's different.
> 
> When we originally set this up way-back-when we had a lot of fun with
> the various ways & syntax of getting it setup, just settling for the
> way we do 'because it works' - not ideal I guess, so I'd be
> interested to see if there's another way of spec'ing the config in
> rc.conf
> 

Could you post the output of ifconfig after boot and while/after
running tcpdump?

-- 
Michael Gmelin