dhclient keeps overwriting resolv.conf ... how can I make it write to resolv.dnsmasq?!

dhclient-enter-hooks

#!/bin/bash

#  Copyright 2018 Comcast Cable Communications Management, LLC
#
#  Licensed under the Apache License, Version 2.0 (the "License");
#  you may not use this file except in compliance with the License.
#  You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
#  Unless required by applicable law or agreed to in writing, software
#  distributed under the License is distributed on an "AS IS" BASIS,
#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#  See the License for the specific language governing permissions and
#  limitations under the License.

########################################################################
# HOW TO USE THIS FILE
########################################################################
#
# Drop this file int /etc/dhcp/dhclient-enter-hooks
# Make sure to make the file +x (so 755) otherwise it's skipped
# You have now showed dhclient that you know "old magic" too...
#
########################################################################

make_resolv_conf() {
    RESOLVCONF=/etc/resolv.dnsmasq
    if [ -n "$new_domain_name" ] || [ -n "$new_domain_name_servers" ]; then
        echo '; generated by /etc/dhclient-enter-hooks' > $RESOLVCONF
        if [ -n "$SEARCH" ]; then
            echo search $SEARCH >> $RESOLVCONF
        else
            if [ -n "$new_domain_name" ]; then
                echo search $new_domain_name >> $RESOLVCONF
            fi
        fi
        chmod 644 $RESOLVCONF
        for nameserver in $new_domain_name_servers; do
            echo nameserver $nameserver >>$RESOLVCONF
        done
    fi
}