> And Amnezia VPN has made their own fork of Wireguard, specifically for breaking through government censorship. But the main problem with obfuscation is the reduction of effective packet MTU
The "obfuscation" in Amnezia's fork does not shrink the available MTU (important for QUIC as it requires a minimum MTU of 1280 while WireGuard itself needs +80 bytes or so for route encapsulation). Amnezia's fork modifies the 4 WireGuard header values (which must be pre-agreed between peers) & occassionally appends (to handshake packets) or sends randomly generated "junk" data.
The "obfuscation" in Amnezia's fork does not shrink the available MTU (important for QUIC as it requires a minimum MTU of 1280 while WireGuard itself needs +80 bytes or so for route encapsulation). Amnezia's fork modifies the 4 WireGuard header values (which must be pre-agreed between peers) & occassionally appends (to handshake packets) or sends randomly generated "junk" data.