1 files changed, 11 insertions, 0 deletions
diff --git a/src/rule_methods.rs b/src/rule_methods.rs
index 3ebd33e..ff46dc3 100644
--- a/src/rule_methods.rs
+++ b/src/rule_methods.rs
@@ -128,6 +128,17 @@ impl Rule {
         self.add_expr(Cmp::new(CmpOp::Eq, [libc::IPPROTO_IGMP as u8]));
         self
     }
+    /// Matches 4in6 packets.
+    pub fn ip4in6(mut self) -> Self {
+        self.add_expr(Meta::new(MetaType::NfProto));
+        self.add_expr(Cmp::new(CmpOp::Eq, [libc::NFPROTO_IPV6 as u8]));
+        self.add_expr(
+            HighLevelPayload::Network(NetworkHeaderField::IPv6(IPv6HeaderField::NextHeader))
+                .build(),
+        );
+        self.add_expr(Cmp::new(CmpOp::Eq, [0 as u8]));
+        self
+    }
     /// Matches 6in4 packets.
     pub fn ip6in4(mut self) -> Self {
         self.add_expr(Meta::new(MetaType::NfProto));