Thanks to Mandell Degerness(and Paolo Lucente)
for the answer which is:
 
> Yes, but you have to do "ifconfig <interface> -filter;ifconfig <interface>
> filter".  This will leave a very brief window when you do not have packet
> filtering in place.  The time is normally small enough that it is
> discounted, however.
> 
> -----Original Message-----
>  
> Can the contents /etc/ifaccess.conf be changed dynamically without
> needing to do a ifconfig down and ifconfig up?
> 
> I'm using 4.0g.
> 
Received on Fri Dec 06 2002 - 18:04:54 NZDT