{
    # Having created a new Inbound UDP chain, activate it and destroy the old.
    $OUT .=<<'EOF';
    /sbin/iptables --replace InboundUDP 1 \
	    --jump $NEW_InboundUDP
    /sbin/iptables --flush $OLD_InboundUDP
    /sbin/iptables --delete-chain $OLD_InboundUDP
EOF
}
