Fix wireguard + DNS issues with opnsense

fix.sh

#!/bin/sh

SOURCE_PATH=$(realpath $0);

if [ -z "${SOURCE_PATH}" ]; then
    exit 1
fi

run_delay () {
    sh -c "(sleep 60 && ${SOURCE_PATH} fix) > /dev/null" &
}

run_fix () {
    /usr/local/etc/rc.filter_configure
    /usr/local/sbin/pluginctl -s unbound restart
    /usr/local/sbin/pluginctl -s dnsmasq restart
    /usr/local/sbin/pluginctl -s dhcpd restart
}

if [ -z "${1}" ]; then
    run_delay
elif [ ! -z "${1}" -a "${1}" == "fix" ]; then
    run_fix
fi

This will need to go in /usr/local/etc/rc.syshook.d/start/99-reload-rules or similar