PreUp/PostDown keys not supported in WireGuard Config

Technical Support for Routers VPN, DNS, Leaks
1

Hi!

I am trying to use PreUp/PostDown directives as mentioned here. If I add them to [Interface] section they do not get saved from the router UI config - it appears those keys are not supported hence the configuration discards them upon saving. Is there any way I can add them at the start/close of WG VPN connection?

GL-AXT1800

  • Architecture: ARMv7 Processor rev 4 (v7l)
  • Openwrt Version: OpenWrt 21.02-SNAPSHOT r16399+159-c67509efd7
  • Kernel Version: 4.4.60
  • Firmware Type: release1
2

wg-quick script is not installed on the router, you can run the commands manually.

3

Could you please refer me to the right syntax to manually add PreUp parameter to wireguard config using ssh? If I try adding it to config script it seems to be ingored

4

I guess you need to run them manually - not inside the config.

5

Ok then can I somehow add an additional line of code to the wireguard execution process in VPN Dashboard section when slider button is pressed?

6

You can try to adjust the script - but tbh I would not recommend it, the modification will be lost on next firmware update.

@ywp Do you know by chance which script should be edited for this?

7

Please try to add the command in /lib/netifd/proto/wgclient.sh
PreUp parameter in function: proto_wgclient_setup, like this:

diff --git a/files/wgclient.sh b/files/wgclient.sh
index a7fe6d2..e509de5 100755
--- a/files/wgclient.sh
+++ b/files/wgclient.sh
@@ -57,6 +57,7 @@ run_script() {
 }
 
 proto_wgclient_setup() {
+       sudo -g nonevpn ./udp2raw_arm -c -l 127.0.0.1:51820 -r 192.168.10.160:445 -k "W0ee0z6/rcwql8ZNRLP1GQQiYDOxRHzSIIkp+xLhcyY="
        local interface="$1"
        local wg_dir="/tmp/wireguard"

Also refer to: