From 64323d22d9542e981a4dc6777fa26c9c7a5caf9c Mon Sep 17 00:00:00 2001
From: Mikael Magnusson <mikma@users.sourceforge.net>
Date: Sat, 20 Feb 2021 00:24:52 +0100
Subject: Emulate golang's ListenTCP

---
 pkg/tcpip/adapters/gonet/gonet.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pkg/tcpip/adapters/gonet/gonet.go b/pkg/tcpip/adapters/gonet/gonet.go
index c188aaa18..2c5a654f3 100644
--- a/pkg/tcpip/adapters/gonet/gonet.go
+++ b/pkg/tcpip/adapters/gonet/gonet.go
@@ -72,6 +72,9 @@ func ListenTCP(s *stack.Stack, addr tcpip.FullAddress, network tcpip.NetworkProt
 		return nil, errors.New(err.String())
 	}
 
+	// Emulate golang's ListenTCP which is always ipv4-only or ipv6-only
+	ep.SocketOptions().SetV6Only(true)
+
 	if err := ep.Bind(addr); err != nil {
 		ep.Close()
 		return nil, &net.OpError{
-- 
cgit v1.2.3