diff --git a/test/regress_util.c b/test/regress_util.c
index b602e316..999326fb 100644
--- a/test/regress_util.c
+++ b/test/regress_util.c
@@ -206,6 +206,9 @@ static struct sa_port_ent {
 	{ "[ffff::1]:1000", AF_INET6, "ffff::1", 1000 },
 	{ "[ffff::1]", AF_INET6, "ffff::1", 0 },
 	{ "[ffff::1", 0, NULL, 0 },
+	{ "[ffff::1]:65599", 0, NULL, 0 },
+	{ "[ffff::1]:0", 0, NULL, 0 },
+	{ "[ffff::1]:-1", 0, NULL, 0 },
 	{ "::1", AF_INET6, "::1", 0 },
 	{ "1:2::1", AF_INET6, "1:2::1", 0 },
 	{ "192.168.0.1:50", AF_INET, "192.168.0.1", 50 },