diff --git a/snmplib/snmp_api.c b/snmplib/snmp_api.c
index 9681582..e6ca8bd 100644
--- a/snmplib/snmp_api.c
+++ b/snmplib/snmp_api.c
@@ -4186,6 +4186,7 @@
 #endif
 #endif
 
+#ifndef aix3
 #ifdef AF_LINK
     case AF_LINK:
 #ifdef _MAX_SA_LEN
@@ -4195,12 +4196,12 @@
 #endif
       break;
 #endif /* AF_LINK */
+#endif
 
     case AF_INET:
       length = sizeof (struct sockaddr_in);
       break;
     default:
-/* XXX: next was not in agent/mibgroup/mibII/var_route.c!! */
       length = sizeof (struct sockaddr);
       break;
     }