feat: 尝试添加IPV6路由追踪

bk/trace_ipv6.go

@@ -0,0 +1,30 @@
+package bk
+
+import (
+	"net"
+
+	"golang.org/x/net/icmp"
+	"golang.org/x/net/ipv6"
+)
+
+func newPacketV6(id uint16, dst net.IP, ttl int) []byte {
+	msg := icmp.Message{
+		Type: ipv6.ICMPTypeEchoRequest,
+		Body: &icmp.Echo{
+			ID:  int(id),
+			Seq: int(id),
+		},
+	}
+	p, _ := msg.Marshal(nil)
+	ip := &ipv6.Header{
+		Version:    ipv6.Version,
+		NextHeader: ProtocolIPv6ICMP,
+		HopLimit:   ttl,
+		Dst:        dst,
+	}
+	buf, err := ip.Marshal()
+	if err != nil {
+		return nil
+	}
+	return append(buf, p...)
+}