VPN: Temporarily solve same subnet conflicts

Technical Support for Routers
1

I am using my Gl.Inet router while I am traveling and I connect to my home with VPN. Sometimes I have problem, when remote subnet is the same as my home subnet (192.168.1.x). Sure, I should change this to something not commonly used range, but I have many devices on my network and I don’t have time to change.

On my PC I am using this temporary solution:

sudo route add -host 192.168.1.10 -interface ppp0

If I want to access home device at 192.168.1.10, it would be accessing trough ppp0 VPN interface.

It is possible to set static route like this on Glinet router?

2

You can add static routes on Luci.

static-routes
static-routes1072×646 23.4 KB

3

Thank you, I tried to add here, but it’s not working. What I am doing wrong here?

40
402206×996 439 KB

192.168.9.4 is my Wireguard VPN interface IP address, I want to do a static route trough this interface.

4

Anyone? :slightly_smiling_face:

I added more info here:

5

Manually specifying ip route trough cli works:

ip route add 192.168.1.99 dev wg0

Any way to achieve this by GUI?

6

It would be also OK, if WG client/GUI interface would support PostUp/PostDown options:

PostUp = ip route add 192.168.1.99 dev wg0; ip route add 192.168.1.54 dev wg0; ip route add 192.168.1.155 dev wg0; ip route add 192.168.1.8 dev wg0;
PostDown = ip route del 192.168.1.99 dev wg0; ip route del 192.168.1.54 dev wg0; ip route del 192.168.1.155 dev wg0;
7

So, any way to support PostUp/PostDown in Wireguard config? It’s part of Wireguard, but I don’t know if is implemented on Glinet firmware.

8

As this is standard we could add to the firmware. But the best way is to let the firmware do it if there is a good way.

@dzwghx @luochongjun

9

In many cases wireguard will not have an UP/DOWN signal and will need to modify the source code or start a daemon

10

wg-quick is handling all this:

https://git.zx2c4.com/WireGuard/about/src/tools/man/wg-quick.8

No need to modify any source or write a daemon.

At this moment how do you handle wg interface UP/DOWN commands? I think with wg-quick.