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#!/bin/csh -f
#
#
set dir=`pwd`
set karch=`uname -m`
set krev=`uname -r|sed -e 's/\([0-9\.]*\)-.*/\1/'`
if ( -d /sys/arch/$karch ) set archdir="/sys/arch/$karch"
if ( -d /sys/$karch ) set archdir="/sys/$karch"
set confdir="$archdir/conf"

if ( $dir =~ */FreeBSD* ) cd ..
echo -n "Uninstalling "
foreach i (ip_fil.[ch] ip_nat.[ch] ip_frag.[ch] ip_state.[ch] fil.c \
	   ip_auth.[ch] ip_proxy.[ch] ip_{ftp,rcmd,raudio}_pxy.c ip_compat.h \
	   ip_log.c mlf_ipl.c mlfk_ipl.c ipl.h)
	echo -n "$i ";
	/bin/rm -f /sys/netinet/$i
end
echo ""

echo "Removing link from /usr/include/osreldate.h to /sys/sys/osreldate.h"
rm /sys/sys/osreldate.h

echo "Removing patch to ip6_input.c and ip6_output.c"
cat FreeBSD-4.0/ipv6-patch-$krev | (cd /sys/netinet6; 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
egrep -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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