gistfile1.txt

You'll need to tell your Yggdrasil-go to use your local checkout of the wireguard code, e.g. by updating your go.mod with a 'replace' line like this:

replace golang.zx2c4.com/wireguard => /path/to/your/wireguard-go

Then, patch your wireguard-go source tree like this:

wireguard-go$ git diff

diff --git a/tun/tun_linux.go b/tun/tun_linux.go
index 791e0be..511e17f 100644
--- a/tun/tun_linux.go
+++ b/tun/tun_linux.go
@@ -399,13 +399,13 @@ func CreateTUN(name string, mtu int) (Device, error) {
        }
 
        var ifr [ifReqSize]byte
-       var flags uint16 = unix.IFF_TUN // | unix.IFF_NO_PI (disabled for TUN status hack)
+       var flags uint32 = unix.IFF_TUN | 0x0100000 // | unix.IFF_NO_PI (disabled for TUN status hack)
        nameBytes := []byte(name)
        if len(nameBytes) >= unix.IFNAMSIZ {
                return nil, errors.New("interface name too long")
        }
        copy(ifr[:], nameBytes)
-       *(*uint16)(unsafe.Pointer(&ifr[unix.IFNAMSIZ])) = flags
+       *(*uint32)(unsafe.Pointer(&ifr[unix.IFNAMSIZ])) = flags
 
        _, _, errno := unix.Syscall(
                unix.SYS_IOCTL,

And then go back to your yggdrasil source and use the `build` script to build yggdrasil.