diff --git a/sys/net/pfvar.h b/sys/net/pfvar.h
--- a/sys/net/pfvar.h
+++ b/sys/net/pfvar.h
@@ -2338,7 +2338,7 @@
 extern void			 pf_unlink_src_node(struct pf_ksrc_node *);
 extern u_int			 pf_free_src_nodes(struct pf_ksrc_node_list *);
 extern void			 pf_print_state(struct pf_kstate *);
-extern void			 pf_print_flags(u_int8_t);
+extern void			 pf_print_flags(uint16_t);
 extern int			 pf_addr_wrap_neq(struct pf_addr_wrap *,
 				    struct pf_addr_wrap *);
 extern u_int16_t		 pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t,
diff --git a/sys/netpfil/ipfilter/netinet/ip_compat.h b/sys/netpfil/ipfilter/netinet/ip_compat.h
--- a/sys/netpfil/ipfilter/netinet/ip_compat.h
+++ b/sys/netpfil/ipfilter/netinet/ip_compat.h
@@ -696,7 +696,7 @@
 #define	IPMINLEN(i, h)	((i)->ip_len >= (IP_HL(i) * 4 + sizeof(struct h)))
 
 #define	TCPF_ALL	(TH_FIN|TH_SYN|TH_RST|TH_PUSH|TH_ACK|TH_URG|\
-			 TH_ECN|TH_CWR)
+			 TH_ECN|TH_CWR|TH_AE)
 
 #if !SOLARIS && !defined(m_act)
 # define	m_act	m_nextpkt
@@ -1128,7 +1128,10 @@
 #ifndef TH_CWR
 # define	TH_CWR	0x80
 #endif
-#define	TH_ECNALL	(TH_ECN|TH_CWR)
+#ifndef TH_AE
+# define	TH_AE	0x100
+#endif
+#define	TH_ECNALL	(TH_ECN|TH_CWR|TH_AE)
 
 /*
  * TCP States
diff --git a/sys/netpfil/pf/pf.c b/sys/netpfil/pf/pf.c
--- a/sys/netpfil/pf/pf.c
+++ b/sys/netpfil/pf/pf.c
@@ -2891,7 +2891,7 @@
 }
 
 void
-pf_print_flags(u_int8_t f)
+pf_print_flags(uint16_t f)
 {
 	if (f)
 		printf(" ");
@@ -2911,6 +2911,8 @@
 		printf("E");
 	if (f & TH_CWR)
 		printf("W");
+	if (f & TH_AE)
+		printf("e");
 }
 
 #define	PF_SET_SKIP_STEPS(i)					\
diff --git a/usr.sbin/ppp/ip.c b/usr.sbin/ppp/ip.c
--- a/usr.sbin/ppp/ip.c
+++ b/usr.sbin/ppp/ip.c
@@ -561,7 +561,7 @@
 {
   char logbuf[200];
   static const char *const TcpFlags[] = {
-    "FIN", "SYN", "RST", "PSH", "ACK", "URG"
+    "FIN", "SYN", "RST", "PSH", "ACK", "URG", "ECE", "CWR", "AE"
   };
   const struct tcphdr *th;
   const struct udphdr *uh;