# MT6000 / Flint2 Wireguard ICMP Response **URL:** \ **Category:** Router\ **Created:** [August 7, 2024, 1:30pm UTC](https://forum.gl-inet.com/t/mt6000-flint2-wireguard-icmp-response/45693 "2024-08-07T13:30:43Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![Fusion](https://forum-assets.gl-inet.com/letter_avatar_proxy/v4/letter/f/a4c791/32.png) [@Fusion](https://forum.gl-inet.com/u/Fusion)\ **Post date:** [August 7, 2024, 1:30pm UTC](https://forum.gl-inet.com/t/mt6000-flint2-wireguard-icmp-response/45693/1 "2024-08-07T13:30:43Z")
I have a MT6000 with wireguard running for 2 devices. The rest of my devices use my ISP's public IP address. I have a broadband monitoring tool which pings my public ipv4 address. When I enable wireguard, the router stops responding to the ICMP request and so it looks like my connection is down. As soon as I stop wireguard, it responds. Any idea how I get around this? ---
**Author:** ![Pro4TLZZ](https://forum-assets.gl-inet.com/letter_avatar_proxy/v4/letter/p/cab0a1/32.png) [@Pro4TLZZ](https://forum.gl-inet.com/u/Pro4TLZZ)\ **Post date:** [August 7, 2024, 2:56pm UTC](https://forum.gl-inet.com/t/mt6000-flint2-wireguard-icmp-response/45693/2 "2024-08-07T14:56:01Z")
> [@Allow inbound ICMP when VPN client is enabled](https://forum.gl-inet.com/t/allow-inbound-icmp-when-vpn-client-is-enabled/44595/8): > > The \*conn\_mark rule supports only tcp and udp by default, if you want to add icmp, use command to specify the proto to use: uci add\_list firewall.wan\_in\_conn\_mark.proto='tcp' uci add\_list firewall.wan\_in\_conn\_mark.proto='udp' uci add\_list firewall.wan\_in\_conn\_mark.proto='icmp' uci add\_list firewall.out\_conn\_mark\_restore.proto='tcp' uci add\_list firewall.out\_conn\_mark\_restore.proto='udp' uci add\_list firewall.out\_conn\_mark\_restore.proto='icmp' uci add\_list firewall.lan\_in\_conn\_mark\_restore.pro… ---
**Author:** ![Fusion](https://forum-assets.gl-inet.com/letter_avatar_proxy/v4/letter/f/a4c791/32.png) [@Fusion](https://forum.gl-inet.com/u/Fusion)\ **Post date:** [August 7, 2024, 7:39pm UTC](https://forum.gl-inet.com/t/mt6000-flint2-wireguard-icmp-response/45693/3 "2024-08-07T19:39:27Z")
That worked thanks for your help. ---
**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, 11:40am UTC](https://forum.gl-inet.com/t/mt6000-flint2-wireguard-icmp-response/45693/4 "2025-10-29T11:40:51Z")