diff --git a/patterns.go b/patterns.go
index c3d1912..1a311b8 100644
--- a/patterns.go
+++ b/patterns.go
@@ -15,6 +15,9 @@ var TCP = And(IP, Base(ma.P_TCP))
 // Define UDP as 'udp' on top of either ipv4 or ipv6
 var UDP = And(IP, Base(ma.P_UDP))
 
+// Define DTLS as 'dtls' on top of udp (on top of ipv4 or ipv6)
+var DTLS = And(UDP, Base(ma.P_DTLS))
+
 // Define UTP as 'utp' on top of udp (on top of ipv4 or ipv6)
 var UTP = And(UDP, Base(ma.P_UTP))
 
diff --git a/patterns_test.go b/patterns_test.go
index 993c070..4758538 100644
--- a/patterns_test.go
+++ b/patterns_test.go
@@ -63,6 +63,17 @@ func TestBasicMatching(t *testing.T) {
 		"/ip6/::/udp/0",
 	}
 
+	good_dtls := []string{
+		"/ip4/0.0.7.6/udp/1234/dtls",
+		"/ip6/::/udp/0/dtls",
+	}
+
+	bad_dtls := []string{
+		"/ip4/0.0.0.0/tcp/12345/dtls",
+		"/ip6/1.2.3.4/ip4/0.0.0.0/udp/1234/dtls",
+		"/dtls",
+	}
+
 	bad_udp := []string{
 		"/udp/12345",
 		"/ip6/fc00::/tcp/5523/udp/9543",
@@ -115,6 +126,9 @@ func TestBasicMatching(t *testing.T) {
 	assertMatches(t, UDP, good_udp)
 	assertMismatches(t, UDP, bad_udp, good_ip, good_tcp, good_ipfs, good_utp, good_quic)
 
+	assertMatches(t, DTLS, good_dtls)
+	assertMismatches(t, DTLS, bad_dtls, good_udp, good_ip, good_tcp, good_ipfs, good_utp, good_quic)
+
 	assertMatches(t, UTP, good_utp)
 	assertMismatches(t, UTP, bad_utp, good_ip, good_tcp, good_udp, good_quic)