add peerwise mtu

upper/services/tunnel/tunnel_test.go

@@ -41,6 +41,7 @@ func TestTunnel(t *testing.T) {
 		EndPoint:   "127.0.0.1:1237",
 		AllowedIPs: []string{"192.168.1.3/32"},
 		PubicKey:   peerpk.Public(),
+		MTU:        4096,
 	})
 	p := link.NewMe(&link.MyConfig{
 		MyIPwithMask: "192.168.1.3/32",
@@ -55,6 +56,7 @@ func TestTunnel(t *testing.T) {
 		EndPoint:   "127.0.0.1:1236",
 		AllowedIPs: []string{"192.168.1.2/32"},
 		PubicKey:   selfpk.Public(),
+		MTU:        4096,
 	})
 	tunnme, err := Create(&m, "192.168.1.3")
 	if err != nil {

upper/services/wg/wg.go

@@ -117,6 +117,7 @@ func (wg *WG) init(srcport, dstport, mtu uint16) {
 			PubicKey:     &peerkey,
 			KeepAliveDur: peer.KeepAliveSeconds,
 			QueryTick:    peer.QuerySeconds,
+			MTU:          uint16(peer.MTU),
 			AllowTrans:   peer.AllowTrans,
 			NoPipe:       true,
 		})