I had to dig into pcap decodes because isakmpd logging is terrible
and noticed this.

ok?


Index: ike.h
===================================================================
RCS file: /cvs/src/usr.sbin/tcpdump/ike.h,v
diff -u -p -r1.26 ike.h
--- ike.h	7 Mar 2016 19:33:26 -0000	1.26
+++ ike.h	1 Feb 2026 12:26:33 -0000
@@ -65,7 +65,7 @@
 	  "E2CN_155", "E2CN_185", "MODP_1536", "NONE", "NONE", "NONE",	\
 	  "NONE", "NONE", "NONE", "NONE", "NONE", "MODP_2048",		\
 	  "MODP_3072", "MODP_4096", "MODP_6144", "MODP_8192", "ECP256",	\
-	  "ECP384", "ECP512", "MODP_1024-160", "MODP_2048-224",		\
+	  "ECP384", "ECP521", "MODP_1024-160", "MODP_2048-224",		\
 	  "MODP_2048-256", "ECP192", "ECP224,"				\
 	}
 #define IKE_ATTR_GROUP_INITIALIZER					\