From 698bb3d702192eefd5a2c95713352a54673c4566 Mon Sep 17 00:00:00 2001
From: Cuthead <183076078+Cuthead@users.noreply.github.com>
Date: Tue, 21 Apr 2026 09:44:36 +0000
Subject: [PATCH] fixup! Auto dual-stack.

---
 phantomtcp/phantom.go | 31 ++++++++++++++++---------------
 phantomtcp/tcp.go     |  2 +-
 2 files changed, 17 insertions(+), 16 deletions(-)

diff --git a/phantomtcp/phantom.go b/phantomtcp/phantom.go
index 5aa06ab..c6f2948 100755
--- a/phantomtcp/phantom.go
+++ b/phantomtcp/phantom.go
@@ -988,27 +988,28 @@ func CreateOutbounds(Outbounds []OutboundConfig) []string {
 					}
 				}
 			}
-			
-			if outbound.Device != "" && Hint&HINT_IPV4 == 0 && Hint&HINT_IPV6 == 0 {
-				ip6, _ := GetLocalTCPAddr(outbound.Device, true)
-				if ip6 != nil {
-					Hint |= HINT_IPV6
-				}
-				ip4, _ := GetLocalTCPAddr(outbound.Device, false)
-				if ip4 != nil {
-					Hint |= HINT_IPV4
-				}
-			}
-
-			if Hint&HINT_IPV4 == 0 && Hint&HINT_IPV6 == 0 {
-				Hint |= HINT_IPV4
-			}
 
 			_, ok := OutboundsMap[outbound.Device]
 			if !ok && !contains(devices, outbound.Device) {
 				devices = append(devices, outbound.Device)
 			}
 		}
+
+		if outbound.Device != "" && Hint&HINT_IPV4 == 0 && Hint&HINT_IPV6 == 0 {
+			ip6, _ := GetLocalTCPAddr(outbound.Device, true)
+			if ip6 != nil {
+				outbound.Hint |= HINT_IPV6
+			}
+			ip4, _ := GetLocalTCPAddr(outbound.Device, false)
+			if ip4 != nil {
+				outbound.Hint |= HINT_IPV4
+			}
+		}
+
+		if Hint&HINT_IPV4 == 0 && Hint&HINT_IPV6 == 0 {
+			outbound.Hint |= HINT_IPV4
+		}
+
 	}
 
 	default_outbound, ok := OutboundsMap["default"]
diff --git a/phantomtcp/tcp.go b/phantomtcp/tcp.go
index f769172..2062609 100755
--- a/phantomtcp/tcp.go
+++ b/phantomtcp/tcp.go
@@ -75,7 +75,7 @@ func GetLocalTCPAddr(name string, ipv6 bool) (*net.TCPAddr, error) {
 			if !ok || len(localAddr.IP) != 16{
 				continue
 			}
-			if localAddr.IP[0] != 0 && (localAddr.IP[0] != 0xfe && localAddr.IP[1]&0xc0 == 0x80) {
+			if localAddr.IP[0] != 0 && !localAddr.IP.IsLinkLocalUnicast() {
 				ip := make([]byte, 16)
 				copy(ip[:16], localAddr.IP)
 				addr6 = &net.TCPAddr{IP: ip[:], Port: 0}