[3301] in Release_Engineering

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Media Lab net change

daemon@ATHENA.MIT.EDU (Richard Basch)
Mon Aug 22 11:27:49 1994

Date: Mon, 22 Aug 1994 11:27:46 -0400
To: rel-eng@MIT.EDU
From: "Richard Basch" <basch@MIT.EDU>


The following needs to be added to the rc.net file for the DECstation.
The Media Lab is changing their network configuration.  Depending on the
third octet, it will be different for each net.  This is the only one I
have at the moment.

Basically for 18.85.6, it is subnetted into 64 hosts.
For other 18.85 subnets, it is different.

		18.85.6.*)
				MASKC=`echo $ADDR | awk -F. '{print $3}'`
				MASKH=`echo $ADDR | awk -F. '{print $4-$4%64}'`
                                GATEWAY=$NET.$MASKC.`expr $MASKH + 1`
                                BROADCAST=$NET.$MASKC.`expr $MASKH + 63`
				NETMASK=0xffffffc0
				;;

(I just had to reconfigure one of the "Athena" machines over there, and
it would be nice if future releases do not trash this change and cause
network problems -- ie. avoid frustrating all the network folks unhappy
both here and at the Media Lab.)

-Richard

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