Subject: Re: How to detect net cable plug-in
To: None <>
From: David Young <>
List: tech-net
Date: 10/15/2003 03:15:26
On Tue, Oct 14, 2003 at 08:56:45PM -0500, Nate Hill wrote:
> On Tue October 14 2003 17:19, der Mouse wrote:
> > > The problem is that link status is not really one of the exported
> > > attributes of net interfaces
> >
> > Something like it must be; ifconfig prints things like "no carrier"
> > when there's no carrier - it has to get that from somewhere....
> Of course it's available, the problem is the manner that one should 
> employ to obtain such information. This problem exists because there 
> have never been any standards associated with such a thing (as far as 
> I know), the homogeneity found in network interfaces today is 
> unprecedented. The best that can be done in this situation is an 
> internally consistent interface to networking data structures and 
> events.

How about adding the selected media word and media status word to struct
if_data and calling rt_ifmsg on media changes? I guess that RTM_VERSION
should be bumped with this change.


David Young             OJC Technologies      Urbana, IL * (217) 278-3933