diff --git a/ibacm/src/libacm.c b/ibacm/src/libacm.c
index 2bb2ac478..e50fbf433 100644
--- a/ibacm/src/libacm.c
+++ b/ibacm/src/libacm.c
@@ -64,8 +64,8 @@ static int ib_acm_connect_open(char *dest)
 	acm_set_server_port();
 	memset(&hint, 0, sizeof hint);
 
-	hint.ai_family = AF_INET;
 	hint.ai_family = AF_UNSPEC;
+	hint.ai_protocol = IPPROTO_TCP;
 
 	ret = getaddrinfo(dest, NULL, &hint, &res);
 	if (ret)