From 946c480bd4f19fc249303d439e994765476cb124 Mon Sep 17 00:00:00 2001
From: RPRX <63339210+RPRX@users.noreply.github.com>
Date: Mon, 31 Mar 2025 12:08:10 +0000
Subject: [PATCH] Update sockopt_darwin.go

---
 transport/internet/sockopt_darwin.go | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/transport/internet/sockopt_darwin.go b/transport/internet/sockopt_darwin.go
index 79e2133a..95900128 100644
--- a/transport/internet/sockopt_darwin.go
+++ b/transport/internet/sockopt_darwin.go
@@ -182,6 +182,12 @@ func applyInboundSocketOptions(network string, fd uintptr, config *SocketConfig)
 		}
 	}
 
+	if config.V6Only {
+		if err := unix.SetsockoptInt(int(fd), unix.IPPROTO_IPV6, unix.IPV6_V6ONLY, 1); err != nil {
+			return errors.New("failed to set IPV6_V6ONLY").Base(err)
+		}
+	}
+
 	return nil
 }