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#!/bin/csh -f
#
set dir=`pwd`
set karch=`uname -m`
if ( -d /sys/arch/$karch ) set archdir="/sys/arch/$karch"
if ( -d /sys/$karch ) set archdir="/sys/$karch"
set confdir="$archdir/conf"

if ( $dir =~ */FreeBSD* ) cd ..
echo "Unpatching ip_input.c, ip_output.c and in_proto.c"
cat FreeBSD-2.2/ip_{in,out}put.c.diffs FreeBSD-2.2/in_proto.c.diffs |  \
(cd /sys/netinet; patch -R)

set config=`(cd $confdir; /bin/ls -1t [0-9A-Z_]*) | head -1`
echo -n "Kernel configuration to update [$config] "
set newconfig=$<
if ( "$newconfig" != "" ) then
	set config="$confdir/$newconfig"
else
	set newconfig=$config
endif
if ( -f $confdir/$newconfig ) then
	mv $confdir/$newconfig $confdir/$newconfig.bak
endif
if ( -d $archdir/../compile/$newconfig ) then
	set bak=".bak"
	set dot=0
	while ( -d $archdir/../compile/${newconfig}.${bak} )
		set bak=".bak.$dot"
		set dot=`expr 1 + $dot`
	end
	mv $archdir/../compile/$newconfig $archdir/../compile/${newconfig}.$bak
endif
grep -v IPFILTER $confdir/$newconfig.bak > $confdir/$newconfig
echo 'You will now need to run "config" and build a new kernel.'
exit 0
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