--- ./src/kprop/kpropd.c.orig	2020-12-15 00:25:40 +0000
+++ ./src/kprop/kpropd.c	2020-12-15 00:28:59 +0000
@@ -77,6 +77,10 @@
 #include <kadm5/admin.h>
 #include <kdb_log.h>
 
+#if (defined(_AIX51) || defined(_AIX52) || defined(_AIX53)) && !(defined(_AIX61))
+#define ss_family __ss_family
+#endif
+
 #ifndef GETSOCKNAME_ARG3_TYPE
 #define GETSOCKNAME_ARG3_TYPE unsigned int
 #endif