diff --git a/test/regress_util.c b/test/regress_util.c
index bdb08506..e78ee6a7 100644
--- a/test/regress_util.c
+++ b/test/regress_util.c
@@ -76,6 +76,7 @@ static struct ipv6_entry {
 	{ "::", { 0, 0, 0, 0, }, CANONICAL },
 	{ "0:0:0:0:0:0:0:0", { 0, 0, 0, 0, }, NORMAL },
 	{ "::1", { 0, 0, 0, 1, }, CANONICAL },
+	{ "::1.2.3.4", { 0, 0, 0, 0x01020304, }, CANONICAL },
 	{ "ffff:1::", { 0xffff0001u, 0, 0, 0, }, CANONICAL },
 	{ "ffff:0000::", { 0xffff0000u, 0, 0, 0, }, NORMAL },
 	{ "ffff::1234", { 0xffff0000u, 0, 0, 0x1234, }, CANONICAL },
@@ -89,6 +90,7 @@ static struct ipv6_entry {
 	{ "ffff", { 0, 0, 0, 0 }, BAD },
 	{ "fffff::", { 0, 0, 0, 0 }, BAD },
 	{ "fffff::", { 0, 0, 0, 0 }, BAD },
+        { "::1.0.1.1000", { 0, 0, 0, 0 }, BAD },
 	{ "1:2:33333:4::", { 0, 0, 0, 0 }, BAD },
 	{ "1:2:3:4:5:6:7:8:9", { 0, 0, 0, 0 }, BAD },
 	{ "1::2::3", { 0, 0, 0, 0 }, BAD },