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List:       dhcp-client
Subject:    Re: Q: How to distinguish servers via VCI ?
From:       Dirk von Suchodoletz <dirk () goe ! net>
Date:       2001-09-05 10:21:01
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> >With dhclient I send an VCI string (send vendor-class-identifier
> >64:79:73;). But how it is possible to check for a special vci string
> >in server response? I tried to ask the dhcpserver directly with the
> >"dhclient -s SERVERNAME" option. But it seems to work rather badly; I have
> >to wait for the acceptance of server responses rather long. 
> 
> Could this be due to DNS delays resolving SERVERNAME?  Is it quicker using
> the server's IP?

Sorry I was not so clear: I use the server IP at this place.
 
> >It is much
> >better if I broadcast the request. (But then the wrong server may response
> >...)
> >
> >Any ideas how to handle this problem? (I have to handle it on my side, it
> >is not too easy to ask the M$-Admins to change their server settings.)
> 
> If the M$ server IPs are static, you might try the "reject IP-address;"
> statement described in dhclient.conf(5).  This rejects the servers on the
> basis of their IP address rather than VCI;  I have to assume you can get
> past the diskless boot process first, though :)

Yes I thougt about it: But do I know if the M$-Admins change the IP
addresses somehow :-) It is a little strange situation: Two different
computer departments running PC's at our campus and no much communication
takes place. So I have to anticipate some changes without being informed
about it ...

So long,
	  Dirk

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