[systemd-devel] systemd-resolved/NetworkManager resolv.conf handling

[Thomas HUMMEL]

On 11/7/22 18:35, Barry Scott wrote:

> I do not know enough about how that works.

I just tested something like this (as a proof of concept) :

f5.sh root:root/0700 in /etc/NetworkManager/dispatcher.d/

#!/bin/bash

usage()
{
     local EXIT_VALUE=$1

     echo "usage: "$SCRIPT_NAME" <interface> <action>"

     exit $EXIT_VALUE
}


SCRIPT_NAME="$0"

INTERFACE=$1
ACTION=$2

F5_INTERFACE="tun0"

F5_NAMESERVER_1="x.x.x.x"
F5_NAMESERVER_2="x.x.x.x"

[ $# -eq 0 ] && usage 0
[ $# -ne 2 ] && usage 1

  "$INTERFACE" != "$F5_INTERFACE" -o "$ACTION" != "up" ] && exit 0

[ "$INTERFACE" == "$F5_INTERFACE" -a "$ACTION" == "up" ] && echo 
"$SCRIPT_NAME: adding $F5_INTERFACE nameservers to systemd-resolved 
configuration"

/usr/bin/resolvectl dns $F5_INTERFACE $F5_NAMESERVER_1 $F5_NAMESERVER_2 
|| { echo "Pb running resolvectl" ; usage 1 ; }

exit 0

-- 
Thomas HUMMEL