diff --git a/app/app.go b/app/app.go
index 90c255082..4c6ba4df3 100644
--- a/app/app.go
+++ b/app/app.go
@@ -13,7 +13,7 @@ import (
 )
 
 const singleMTU = 1330
-const doubleMTU = 1250
+const doubleMTU = 1280 // minimum mtu for IPv6, may cause frag reassembly somewhere
 
 type WarpOptions struct {
 	Bind     netip.AddrPort