At 03:46 PM 5/21/97 -0400, Perry E. Metzger wrote:
>I would very much like to be able to ifconfig an interface up WITHOUT
>implying that I want the IP stack active AT ALL. I can then use BPF to
>snoop or put out packets without fear.

For what it's worth, we solved this in Digital UNIX by adding an ac_flags
to arpcom (ec_flags to ethercom) and letting AC_IPUP reflect whether IP
is active on the interface or not.  
-- 
Matt Thomas               Internet:   matt@3am-software.com
3am Software Foundry      WWW URL:    http://www.3am-software.com/bio/matt.html
Westford, MA              Disclaimer: I disavow all knowledge of this message