From 15e8fc08ce7425c0b3ac5f95f998255106a4aa3f Mon Sep 17 00:00:00 2001
From: Roman Khimov <roman@nspcc.ru>
Date: Fri, 10 Sep 2021 11:30:27 +0300
Subject: [PATCH] nft-nd-nns: more checks for IPv6

neo-project/non-native-contracts#7
---
 examples/nft-nd-nns/nns.go | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/examples/nft-nd-nns/nns.go b/examples/nft-nd-nns/nns.go
index e45835cf2..0206b9524 100644
--- a/examples/nft-nd-nns/nns.go
+++ b/examples/nft-nd-nns/nns.go
@@ -617,8 +617,14 @@ func checkIPv6(data string) bool {
 	for i, f := range fragments {
 		if len(f) == 0 {
 			if i == 0 {
+				if len(fragments[1]) != 0 {
+					return false
+				}
 				nums[i] = 0
 			} else if i == l-1 {
+				if len(fragments[i-1]) != 0 {
+					return false
+				}
 				nums[7] = 0
 			} else if hasEmpty {
 				return false