--- ./snmplib/transports/snmpUDPBaseDomain.c.org     2019-09-25 07:01:09 +0000
+++ ./snmplib/transports/snmpUDPBaseDomain.c 2019-09-25 07:02:59 +0000
@@ -53,6 +53,10 @@
 #include <net-snmp/library/system.h>
 #include <net-snmp/library/snmp_assert.h>

+#ifdef _AIX
+#define MSG_DONTWAIT MSG_NONBLOCK
+#endif
+
 #ifndef  MSG_DONTWAIT
 #define MSG_DONTWAIT 0
 #endif