Same NIC name to MAC mapping on FreeBSD

[Gary Palmer]

On Wed, Jul 01, 2015 at 11:42:43AM +0800, Julian Elischer wrote:
> On 7/1/15 6:56 AM, Adrian Chadd wrote:
> > Hi,
> >
> > If we don't support this as part of the interface renaming stuff, it
> > would certainly be good to.
> >
> >
> > a-
> >
> >
> > On 29 June 2015 at 21:36, Wei Hu <weh at microsoft.com> wrote:
> >>> -----Original Message-----
> >>> From: owner-freebsd-net at freebsd.org [mailto:owner-freebsd-
> >>> net at freebsd.org] On Behalf Of Paul S.
> >>> Sent: Monday, June 29, 2015 7:53 PM
> >>> To: freebsd-net at freebsd.org
> >>> Subject: Re: Same NIC name to MAC mapping on FreeBSD
> >>>
> >>> On my production systems, I've never seen it deviate without hardware
> >>> changes.
> >>>
> >>> Are you seeing otherwise?
> >>>
> >> In Hyper-V, if say three NICs were assigned to the VM, I got following mapping
> >> Initially:
> >>
> >> Hn0 -> MAC 0
> >> Hn1 -> MAC 1
> >> Hn2 -> MAC2
> >>
> >> Then if I remove the NIC with MAC 1 and reboot, I want the other two interfaces to keep the same
> >> Names instead of reassigning hn1 to MAC2. This is a requirement from virtual appliance
> >> Vendor to retain such mappings.  I am wondering if there is any way to do this without
> >> Asking customer or manually editing any config files.
> do interface arrivals show up in devd? if so they could be renamed on 
> arrival
> I vaguely remember being able to do this some years ago but I can't 
> remember the details.

I believe they do, yes.  In fact I seem to remember a discussion on this
in the last year and someone shared either a devd or an rc.d script to 
ensure static NIC names, however searching the web archvies I couldn't
find it

Regards,

Gary