Index: src/xastir_udp_client.c
--- src/xastir_udp_client.c.orig
+++ src/xastir_udp_client.c
@@ -111,7 +111,7 @@ int try_exchange(struct addrinfo *addr, char *buffer, 
 }
 
 #ifndef AI_DEFAULT
-  #define AI_DEFAULT (AI_V4MAPPED|AI_ADDRCONFIG)
+  #define AI_DEFAULT AI_ADDRCONFIG
 #endif
 
 // Loop through the possible addresses for hostname (probably IPv6 and IPv4)
