From f0f51f7f77c56eb64da188dfba0af2ff6588a920 Mon Sep 17 00:00:00 2001
From: "Stephen McQuay (smcquay)" <stephen@mcquay.me>
Date: Fri, 30 Mar 2018 09:56:55 -0700
Subject: [PATCH] check ranges bi-directionally

---
 cidr.go | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/cidr.go b/cidr.go
index 3c3c045..7f78ba4 100644
--- a/cidr.go
+++ b/cidr.go
@@ -67,7 +67,10 @@ func NoOverlap(subnets []*net.IPNet) error {
 		firstLastIP[i] = []net.IP{first, last}
 	}
 	for i, s := range subnets {
-		for j := i + 1; j < len(subnets); j++ {
+		for j := range subnets {
+			if i == j {
+				continue
+			}
 			first := firstLastIP[j][0]
 			last := firstLastIP[j][1]
 			if s.Contains(first) || s.Contains(last) {