Re: duplicate MAC - Re: 13.1R problems on Pi3

From: bob prohaska <fbsd_at_www.zefox.net>
Date: Tue, 05 Jul 2022 23:34:40 UTC 
On Tue, Jul 05, 2022 at 07:02:18AM -0700, Mark Millard wrote:
> 
> > So for you I would guess:
> > 
> > ifconfig_ue0="ether ??:??:??:??:??:?? inet 50.1.20.28 netmask 255.255.255.0"
> > 
> >
 
I tried a few variants, all produced a dead connection. 

Using  one like you suggested:

# ethernet address increased by 1 in the last digit
ifconfig ue0="ether b8:27:eb:71:46:4f inet 50.1.20.28 netmask 255.255.255.0"

produced a flood of errors during boot:
ifconfig: interface ue0=ether b8:27:eb:71:46:4f inet 50.1.20.28 netmask 255.255.255.0 does not exist

There was clearly no network connectivity, but the serial console
remained responsive. The host sharing the same MAC address exhibited
no connectivity problems. 


Another suggestion was found in an old forum post, assigning the IP
in the usual fashion but adding an alias:

ifconfig_ue0="inet 50.1.20.28 netmask 255.255.255.0" 
ifconfig_ue0_alias0="link b8:27:eb:71:46:4f"
(trading ether for link had no effect)

resulted in the gateway (and everything else) being unreachable. 

Thanks for writing!

bob prohaska