What happens after connecting to warp, in mac

I’ve been using Warp vpn for about 2 years now but recently i have noticed some weird things! for example without using vpn, i can play CSGO (and other online steam games) just fine on my macbook, but if i ever enable the warp vpn and then disable it, those games will no longer be able to connect to steam and i HAVE TO completely reboot my laptop in order to play without vpn ( but if i turn it back on, they will connect). and today i noticed another weird thing! i use an SSH tunnel to connect to our company’s database, and it works just fine without the vpn! but again if i connect to WARP i won’t be able to use that tunnel again until i either turn the vpn back on or reboot the system! (the tunnel will be created successfully but i can’t actually connect to the database!) it seems to me that something changes in my network settings after connecting to WARP and messes with my connections and will be reset after a reboot! i have been searching for a remedy for a month now and i have got nothing! please help!

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Update: i have managed to “kind of” resolve the problem! by connecting to instead of AND change the DNS protocol to TLS, this way all the connection problems will be solved without using VPN (which slows my internet connection down). but i still don’t understand what’s happening here! what does cloudflare change in my computer that does this? and why does rebooting solve it?

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May I ask are you on a fixed line or mobile data network connecton?

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i’m using TD-LTE network. weird enough LTE network from the same provider will not work with warp AT ALL (won’t connect). another interesting thing is that using a ADSL network i can connect to warp using wireguard configuration BUT with this TD-LTE network i can only connect using the official macOS/Windows/ubuntu/ios client.

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TD-LTE - mobile?
If so, mobile network knows, at least at my country, Tele2 (recently Telemach) was switching IP address and the base so frequently and I got disrupted either throttled when using SSH or FTP - like downloading a file.

As an example, slightly different, I had to use ProtonVPN when downloading a file approx. ~ 50MB or even a larger one (up to 1GB) to keep the connection state and stable speed as it was stated and signed in the aggrement by the ISP.

  • was using custom DNS and (without the WARP client app)

Not to mention, TCP and UDP states.

Maybe, somewhat it lost the connection and packets could not be established again even if using custom DNS like and despite the WARP application itself and the selected mode (DoH, DoT, Warp) and protocol (TCP, UDP …).

Regarding reboot of the device, maybe you should only reset (enable/disable) the networking service (or interface) so it could get the new IP back “as is” established via an 4G “antena” via your nearest area?

Due to gaming via with a VPN (even using a WARP client), I believe you have to have the stable connection, regardless the ping and latency.

I could be wrong here, neither correct, but just guessing what could be or possibly go wrong here.

Also, due to our’s ISP peering, it could be that WARP client connection is at first with DNS only (DoH) established at Croatia, therefore if using mode “WARP” goes over Sofia, therafter some time it goes either over Buchurest or Vienna - for example at my location.

Kind of, reminds me when using OutlineVPN (https://getoutline.org/) - which sits on shadowsocks.
As an example, when using Outline, be it on a fibre optic connection (FTTH) or a mobile network (4G+ LTE) connectnion, in both cases I cannot access Cloudflare Community (login) Forum, neither login at Instagram, while I can login Gmail and Facebook, and other.
Also, some dashboard like cPanel is “lagging”, etc. due to the different type of “machine” which is working “under the hood”.

Here are similar topics as you have:

Nevertheless, the Steam:

Technology behind it and the difficulties to cover up (including mobile):

Some discussion:

Thank you for your answer but i have a new theory! well no so much of a theory i actually found out that the problem is with my LOCALHOST!
steam games can’t open with this error: can’t connect to LOCAL steam client! it has nothing to do with the internet at all!
i can’t start docker!
my ssh tunnels connect successfully but i can’t connect to the localhost:ports that i assigned to them!
so … i’m pretty sure cloudflare is messing with my localhost!


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