On Wed, Nov 12, 2014 at 09:13:37AM EST, Stefan Sperling wrote:

> On Wed, Nov 12, 2014 at 03:26:02PM +0200, Lars Engblom wrote:
>
> > I guess you mean the case of having several network interfaces. Let
> > all of the unconfigured interfaces get the IP settings from
> > hostname.default and write this in the documentation. It is easier
> > to plug in just one cable than having to guess all the names of the
> > interfaces (em0, bge0, re0, rl0 etc).
>
> One problem with this idea is that you can't have the same IP on
> multiple interfaces and expect things to work.
>
> A recent discussed on misc@ made this quite clear:
> http://marc.info/?l=openbsd-misc&m=141564884907430&w=2

The scope there was even broader:

PH> That is not supported.  You MUST NOT have IPs in the same range on
PH> different interfaces.

I think I know what the OP has in mind - having a "default" IP address
configuration which gets assigned to an interface where "media" is
present.

The only way I see this working is with only a single Ethernet adaptor
has the cable plugged in - otherwise it gets messy.

One way or another, this shouldn't be too difficult to script and run
from /etc/rc.firsttime.

rjc

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