From cbedebc9dd72623f5aa10ea67474f5e4066c7290 Mon Sep 17 00:00:00 2001
From: orignal <i2porignal@yandex.ru>
Date: Tue, 4 Feb 2020 13:32:16 -0500
Subject: [PATCH] change minimal MTU size

---
 libi2pd/util.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libi2pd/util.cpp b/libi2pd/util.cpp
index 051eea5d..c1b741fc 100644
--- a/libi2pd/util.cpp
+++ b/libi2pd/util.cpp
@@ -324,7 +324,7 @@ namespace net
 
 	int GetMTU(const boost::asio::ip::address& localAddress)
 	{
-		const int fallback = 576; // fallback MTU
+		int fallback = localAddress.is_v6 () ? 1280 : 620; // fallback MTU
 
 #ifdef WIN32
 		return GetMTUWindows(localAddress, fallback);