1 files changed, 55 insertions, 0 deletions
diff --git a/ipv6test.go.new b/ipv6test.go.new
new file mode 100644
index 0000000..c9d814e
--- /dev/null
+++ b/ipv6test.go.new
@@ -0,0 +1,55 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"net"
+	"os"
+	"time"
+)
+
+const (
+	ipv6TestHost = "ipv6.google.com"
+	testPort     = "443" // HTTPS port
+)
+
+func main() {
+	// --- Step 1: Fast DNS Lookup ---
+	// We'll use a separate, short timeout just for the DNS resolution.
+	// If DNS is broken, we'll know in a second or two.
+	dnsTimeout := 2 * time.Second
+	ctx, cancel := context.WithTimeout(context.Background(), dnsTimeout)
+	defer cancel()
+
+	// net.DefaultResolver.LookupIPAddr forces the resolver to look up the host.
+	// We specify "ip6" to ensure we only get AAAA records.
+	addrs, err := net.DefaultResolver.LookupIPAddr(ctx, "ip6", ipv6TestHost)
+	if err != nil {
+		fmt.Printf("IPv6 DNS resolution failed: %v\n", err)
+		fmt.Println("This likely means your network cannot resolve IPv6 addresses.")
+		os.Exit(1)
+	}
+
+	if len(addrs) == 0 {
+		fmt.Printf("No IPv6 addresses found for %s\n", ipv6TestHost)
+		os.Exit(1)
+	}
+
+	// If we get here, DNS is working. Let's use the first address we found.
+	targetIP := addrs[0].IP.String()
+	fmt.Printf("Successfully resolved %s to IPv6 address: %s\n", ipv6TestHost, targetIP)
+
+	// --- Step 2: Connection Attempt ---
+	// Now we try to connect to the IP we found. This tests routing and firewalls.
+	connectionTimeout := 3 * time.Second
+	conn, err := net.DialTimeout("tcp6", net.JoinHostPort(targetIP, testPort), connectionTimeout)
+	if err != nil {
+		fmt.Printf("IPv6 connection to %s failed: %v\n", targetIP, err)
+		fmt.Println("This likely means your network has an IPv6 routing or firewall issue.")
+		os.Exit(1)
+	}
+	defer conn.Close()
+
+	fmt.Println("IPv6 connectivity test successful.")
+	os.Exit(0)
+}