# Internet dropping when connecting to Wireguard client on GL-MT300N-V2 **URL:** \ **Category:** Router\ **Created:** [March 27, 2022, 6:19pm UTC](https://forum.gl-inet.com/t/internet-dropping-when-connecting-to-wireguard-client-on-gl-mt300n-v2/20806 "2022-03-27T18:19:28Z")\ **Posts on this page:** 13\ **Page:** 1
**Author:** ![pauliiw](https://forum-assets.gl-inet.com/letter_avatar_proxy/v4/letter/p/4da419/32.png) [@pauliiw](https://forum.gl-inet.com/u/pauliiw)\ **Post date:** [March 27, 2022, 6:19pm UTC](https://forum.gl-inet.com/t/internet-dropping-when-connecting-to-wireguard-client-on-gl-mt300n-v2/20806/1 "2022-03-27T18:19:28Z")
I have 2 GL-MT300N-V2.I have upgraded both to the latest firmware. I am trying to set up a VPN tunnel between 2 sites. So I have 1 GL-MT300N-V2 set up as a Wireguard server and connected to the router in my house. It is connected. Green light on the Wireguard server. I can access the internet from it. I copied the config file from the server and then pasted it in the Wireguard client. To get this initially setup I am tethering internet from my phone to the Wireguard client box. I am able connect to the internet with the Wireguard client box. but once I connect the Wireguard client the internet drops. I have tried disabling the firewall on my laptop. but no joy. The wireguard client is showing as yellow. Any ideas why the internet is dropping when I try to connect the client. ---
**Author:** ![limbot](https://forum-assets.gl-inet.com/user_avatar/forum.gl-inet.com/limbot/32/1267_2.png) [@limbot](https://forum.gl-inet.com/u/limbot)\ **Post date:** [March 27, 2022, 9:16pm UTC](https://forum.gl-inet.com/t/internet-dropping-when-connecting-to-wireguard-client-on-gl-mt300n-v2/20806/2 "2022-03-27T21:16:28Z")
If your server is sitting behind your router then U require a public facing IP address on your source router and need to port forwarding port 51820 on your source router to the IP address of your Mango ---
**Author:** ![pauliiw](https://forum-assets.gl-inet.com/letter_avatar_proxy/v4/letter/p/4da419/32.png) [@pauliiw](https://forum.gl-inet.com/u/pauliiw)\ **Post date:** [March 28, 2022, 9:46am UTC](https://forum.gl-inet.com/t/internet-dropping-when-connecting-to-wireguard-client-on-gl-mt300n-v2/20806/3 "2022-03-28T09:46:21Z")
I have port forwarding setup already on the wireguard server which is connected by WAN connection to the router, but no joy. Once I connect the Wireguard client mango I lose internet. Sorry for the image size, but as I am a new user I can only post one image. If you open the image in another screen you can see it properly This is port forwarding setup on my internet router. Which I have connected to the Manga thru WAN connection. ![image](https://forum-static.gl-inet.com/original/2X/5/587e64d6604248dba1bdf7ba01693e59283a3a7f.png) ---
**Author:** ![alzhao](https://forum-assets.gl-inet.com/letter_avatar_proxy/v4/letter/a/5f9b8f/32.png) [@alzhao](https://forum.gl-inet.com/u/alzhao)\ **Post date:** [March 28, 2022, 11:15am UTC](https://forum.gl-inet.com/t/internet-dropping-when-connecting-to-wireguard-client-on-gl-mt300n-v2/20806/4 "2022-03-28T11:15:36Z")
You should not use 192.168.8.2 as the IP of the client router. You should use a different one, e.g. 192.168.10.1 ---
**Author:** ![pauliiw](https://forum-assets.gl-inet.com/letter_avatar_proxy/v4/letter/p/4da419/32.png) [@pauliiw](https://forum.gl-inet.com/u/pauliiw)\ **Post date:** [March 28, 2022, 11:43am UTC](https://forum.gl-inet.com/t/internet-dropping-when-connecting-to-wireguard-client-on-gl-mt300n-v2/20806/5 "2022-03-28T11:43:03Z")
Thanks, updated the IP on the client router to 192.168.10.1. Issue still remains though. Internet on the client router until I connect the Wireguard client. I also tried disabling the firewall on my laptop and the router. ---
**Author:** ![GLrs](https://forum-assets.gl-inet.com/user_avatar/forum.gl-inet.com/glrs/32/16471_2.png) [@GLrs](https://forum.gl-inet.com/u/GLrs)\ **Post date:** [March 28, 2022, 3:03pm UTC](https://forum.gl-inet.com/t/internet-dropping-when-connecting-to-wireguard-client-on-gl-mt300n-v2/20806/6 "2022-03-28T15:03:06Z")
Even though you spared essential information in your screen shots (😐) one can see: You’re searching at the wrong place: Your wireguard tunnel doesn’t get established at all - see (1). That’s the reason you have no internet at all (see (2)). So the 1st thing is to check your WG-C/S config then your port forwarding (guess it’s wrong/counterproductive). ![1](https://forum-static.gl-inet.com/original/2X/0/049e2999c0a086e9afcede792f9db9f76c56d616.png) P.S. please describe your network better. “192.168.1.7” is the WAN address of the WG-Server-Router? Best was you posted a (hand-written is enough) pic or at least described "device A is connected by port X to device B, port Y etc.) ---
**Author:** ![GLrs](https://forum-assets.gl-inet.com/user_avatar/forum.gl-inet.com/glrs/32/16471_2.png) [@GLrs](https://forum.gl-inet.com/u/GLrs)\ **Post date:** [March 28, 2022, 4:01pm UTC](https://forum.gl-inet.com/t/internet-dropping-when-connecting-to-wireguard-client-on-gl-mt300n-v2/20806/7 "2022-03-28T16:01:49Z")
> [@alzhao](#): > > You should not use 192.168.8.2 as the IP of the client router. You should use a different one, e.g. 192.168.10.1 That’s not a functional issue. The only real downside of identical IP ranges on both sides is that neither side can address clients of the other subnet. Internet access would work flawlessly. ---
**Author:** ![pauliiw](https://forum-assets.gl-inet.com/letter_avatar_proxy/v4/letter/p/4da419/32.png) [@pauliiw](https://forum.gl-inet.com/u/pauliiw)\ **Post date:** [March 28, 2022, 5:48pm UTC](https://forum.gl-inet.com/t/internet-dropping-when-connecting-to-wireguard-client-on-gl-mt300n-v2/20806/8 "2022-03-28T17:48:36Z")
I got this going. I referred to this guide - [Building a Site-2-Site network manually using two GL.iNet routers](https://forum.gl-inet.com/t/building-a-site-2-site-network-manually-using-two-gl-inet-routers/18294) Wish I’d seen it earlier. I changed the Endpoint in the config file on the Client to be the same as the WAN IP address of this Server router. Thanks for all the help ---
**Author:** ![pauliiw](https://forum-assets.gl-inet.com/letter_avatar_proxy/v4/letter/p/4da419/32.png) [@pauliiw](https://forum.gl-inet.com/u/pauliiw)\ **Post date:** [April 22, 2022, 9:19pm UTC](https://forum.gl-inet.com/t/internet-dropping-when-connecting-to-wireguard-client-on-gl-mt300n-v2/20806/9 "2022-04-22T21:19:34Z")
Posting on my thread again. From my initial post in this thread I got this going maybe once or twice and have had trouble getting it working since. From the initial post in this thread. I have 2 GL-MT300N-V2.I have upgraded both to the latest firmware. I am trying to set up a VPN tunnel between 2 sites. So I have 1 GL-MT300N-V2 set up as a Wireguard server and connected to the router in my house. It is connected. Green light on the Wireguard server. I can access the internet from it. I copied the config file from the server and then pasted it in the Wireguard client. To get this initially setup I am USB tethering internet from my phone to the Wireguard client box. I am able connect to the internet with the Wireguard client box. but once I connect the Wireguard client VPN the internet drops. I have got it going once or twice. I thought it may be the phone. So I tried USB tethering on another phone and still no connection. It connects fine until I tried connect the client VPN and the client remains yellow ![mango](https://forum-static.gl-inet.com/original/2X/1/1fdbc54cdb2fbb7c5c0f89686fc05ac920669fce.jpeg) ---
**Author:** ![pauliiw](https://forum-assets.gl-inet.com/letter_avatar_proxy/v4/letter/p/4da419/32.png) [@pauliiw](https://forum.gl-inet.com/u/pauliiw)\ **Post date:** [April 24, 2022, 7:35pm UTC](https://forum.gl-inet.com/t/internet-dropping-when-connecting-to-wireguard-client-on-gl-mt300n-v2/20806/10 "2022-04-24T19:35:27Z")
Can anyone help me with this please. I really need to get it going and I am lost as to how to get this going? ---
**Author:** ![wcs2228](https://forum-assets.gl-inet.com/user_avatar/forum.gl-inet.com/wcs2228/32/6112_2.png) [@wcs2228](https://forum.gl-inet.com/u/wcs2228)\ **Post date:** [April 25, 2022, 1:55am UTC](https://forum.gl-inet.com/t/internet-dropping-when-connecting-to-wireguard-client-on-gl-mt300n-v2/20806/11 "2022-04-25T01:55:33Z")
Try configuring different subnets for each network zone: - Internet router LAN - 192.168.1.1 - Mango 1 WG server router WAN - 192.168.1.2 - Mango 1 WG server router LAN - 192.168.2.8 - Mango 2 WG client router LAN - 192.168.3.10 You also need DDNS on the Mango 1 server router and put the DDNS domain/hostname as the endpoint in the client Wireguard config file, not 192.168.1.2. For initial testing, you may be able to put the Public IP address of the Internet router WAN ([whatismyipaddress.com](http://whatismyipaddress.com)). _I do not work for and I am not directly associated with GL.iNet_ ---
**Author:** ![alzhao](https://forum-assets.gl-inet.com/letter_avatar_proxy/v4/letter/a/5f9b8f/32.png) [@alzhao](https://forum.gl-inet.com/u/alzhao)\ **Post date:** [April 25, 2022, 2:25am UTC](https://forum.gl-inet.com/t/internet-dropping-when-connecting-to-wireguard-client-on-gl-mt300n-v2/20806/12 "2022-04-25T02:25:04Z")
You should not change the subnet. You cannot use 192.168.1.2 for Wireguard in your server. Just use the default one. Also, the Endpoint should not be 192.168.1.2:51820. It has to be the public IP address of your home Internet. ---
**Author:** ![bruce](https://forum-assets.gl-inet.com/user_avatar/forum.gl-inet.com/bruce/32/35649_2.png) [@bruce](https://forum.gl-inet.com/u/bruce)\ **Post date:** [October 29, 2025, 4:17am UTC](https://forum.gl-inet.com/t/internet-dropping-when-connecting-to-wireguard-client-on-gl-mt300n-v2/20806/13 "2025-10-29T04:17:01Z")