When the TCP MSS option in the modem settings is less than 1400, some sites cannot be opened while connected to Warp+.
I also came to the conclusion that for some users when using Warp+ in WireGuard there is a problem of not opening sites.
To solve this problem, they have to manually set the value MTU = 1412 in the WireGuard settings.
Of course, these two things are different:
Problem with TCP MSS option value in modem
Problem with TCP MTU Option value in WireGuard
So if someone can not access the Internet after connecting to Warp+, they can change the MTU / MSS value according to the above description.
So you may be wondering why you should change the MTU / MSS value?!
This article answers your question:
- I still can’t figure out why Warp+ has trouble changing the MTU / MSS value!
- Does anyone have a similar experience in this regard?