From a4d153f09493d137fa09c3a33662b5774863b818 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=BA=90=E6=96=87=E9=9B=A8?=
 <41315874+fumiama@users.noreply.github.com>
Date: Mon, 6 Oct 2025 02:04:56 +0800
Subject: [PATCH] feat: add -6 option

---
 go.mod  | 2 +-
 go.sum  | 4 ++--
 main.go | 4 ++++
 3 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/go.mod b/go.mod
index d42fd5a..95c852b 100644
--- a/go.mod
+++ b/go.mod
@@ -5,7 +5,7 @@ go 1.20
 require (
 	github.com/FloatTech/ttl v0.0.0-20250224045156-012b1463287d
 	github.com/fumiama/orbyte v0.0.0-20251002065953-3bb358367eb5
-	github.com/fumiama/terasu v0.0.0-20251005173352-15625807a516
+	github.com/fumiama/terasu v0.0.0-20251005180137-2732915ddaff
 	github.com/sirupsen/logrus v1.9.3
 )
 
diff --git a/go.sum b/go.sum
index 7f133f3..6a8022c 100644
--- a/go.sum
+++ b/go.sum
@@ -7,8 +7,8 @@ github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/fumiama/orbyte v0.0.0-20251002065953-3bb358367eb5 h1:j9o0XVvdAeLwrBYMnh0SerrMc9CgNU6AGszbsvFzoc0=
 github.com/fumiama/orbyte v0.0.0-20251002065953-3bb358367eb5/go.mod h1:FOjdw7KdCbK2eH3gRPhwFNCoXKpu9sN5vPH4El/8e0c=
-github.com/fumiama/terasu v0.0.0-20251005173352-15625807a516 h1:j0kpRzKlUfWCuz0eLVQQH7XOPtF8QI5CAHUC8HoN7Lk=
-github.com/fumiama/terasu v0.0.0-20251005173352-15625807a516/go.mod h1:ltlQhbPE0423K0bNQxJdhtkYgFxXstUobc8k+9LFY88=
+github.com/fumiama/terasu v0.0.0-20251005180137-2732915ddaff h1:ibt5TTBOi9ZYxrHbffJGT6dLVEUaJHJpKHUzU9RDGGA=
+github.com/fumiama/terasu v0.0.0-20251005180137-2732915ddaff/go.mod h1:qK3wYfEfoKnYloj0gbv4hTSXuhsdLORvfciN/evJa1g=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/sirupsen/logrus v1.9.3 h1:dueUQJ1C2q9oE3F7wvmSGAaVtTmUizReu6fjN8uqzbQ=
diff --git a/main.go b/main.go
index e59f6e8..7709d95 100644
--- a/main.go
+++ b/main.go
@@ -17,6 +17,7 @@ import (
 	"github.com/fumiama/orbyte/pbuf"
 	"github.com/fumiama/terasu"
 	"github.com/fumiama/terasu/dns"
+	"github.com/fumiama/terasu/ip"
 	"github.com/sirupsen/logrus"
 )
 
@@ -38,6 +39,7 @@ func main() {
 	fbsrv := flag.String("fb", "127.0.0.1:53", "fallback to DNS UDP port")
 	debug := flag.Bool("d", false, "show debug log")
 	flag.BoolVar(&forcefb, "ffb", false, "force using fallback")
+	flag.BoolVar(&ip.IsIPv6Available, "6", false, "use ipv6 servers")
 	frag := flag.Uint("frag", 3, "TLS first fragemt size (0 to disable)")
 	flag.Parse()
 
@@ -58,6 +60,8 @@ func main() {
 		logrus.Infoln("Set fallback server to", fallback)
 	}
 
+	logrus.Infoln("Use ipv6 servers:", ip.IsIPv6Available)
+
 	addrport, err := netip.ParseAddrPort(*iphost)
 	if err != nil {
 		logrus.Fatal("ParseAddrPort err:", err)