1 files changed, 1 insertions, 0 deletions
diff --git a/ipproto.c b/ipproto.c
index 53630ff9..7e155ac0 100644
--- a/ipproto.c
+++ b/ipproto.c
@@ -343,6 +343,7 @@ static const char *netdb_protocol_names[256] = {
 	NULL,                /* 249 (unassigned) */
 	NULL,                /* 250 (unassigned) */
 	NULL,                /* 251 (unassigned) */
+	NULL,                /* 252 (unassigned) */
 	"exptest-253",       /* 253 (Use for experimentation and testing,
 	                      *     RFC 3692)
 	                      */