From 137d1a3ac168cf57f9b2b2487372d053548d37e6 Mon Sep 17 00:00:00 2001
From: Roman Khimov <roman@nspcc.ru>
Date: Thu, 9 Sep 2021 19:35:17 +0300
Subject: [PATCH] examples: additional check for IPv6 completeness

See neo-project/non-native-contracts#4.
---
 examples/nft-nd-nns/nns.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/examples/nft-nd-nns/nns.go b/examples/nft-nd-nns/nns.go
index fb21e1c1d..4b8d7bb96 100644
--- a/examples/nft-nd-nns/nns.go
+++ b/examples/nft-nd-nns/nns.go
@@ -613,6 +613,9 @@ func checkIPv6(data string) bool {
 			nums[idx] = n
 		}
 	}
+	if l < 8 && !hasEmpty {
+		return false
+	}
 
 	f0 := nums[0]
 	if f0 < 0x2000 || f0 == 0x2002 || f0 == 0x3ffe || f0 > 0x3fff { // IPv6 Global Unicast https://www.iana.org/assignments/ipv6-address-space/ipv6-address-space.xhtml