From b8c031486154b1095dfb1655630cf1601556c07c Mon Sep 17 00:00:00 2001
From: Matt Potter <matthew.potter@uswitch.com>
Date: Fri, 5 May 2017 12:18:43 +0100
Subject: [PATCH] deduplicate endpoints before DNS registration

---
 federation/pkg/federation-controller/service/dns.go | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/federation/pkg/federation-controller/service/dns.go b/federation/pkg/federation-controller/service/dns.go
index 8c733e51223..2f5627781fa 100644
--- a/federation/pkg/federation-controller/service/dns.go
+++ b/federation/pkg/federation-controller/service/dns.go
@@ -342,12 +342,18 @@ func getResolvedEndpoints(endpoints []string) ([]string, error) {
 				return resolvedEndpoints, err
 			}
 			resolvedEndpoints = append(resolvedEndpoints, ipAddrs...)
-
 		} else {
 			resolvedEndpoints = append(resolvedEndpoints, endpoint)
 		}
 	}
-	return resolvedEndpoints, nil
+	deduped := []string{}
+
+	for _, value := range resolvedEndpoints {
+		if !dedupeEndpoints(value, deduped) {
+			deduped = append(deduped, value)
+		}
+	}
+	return deduped, nil
 }
 
 /* ensureDNSRrsets ensures (idempotently, and with minimum mutations) that all of the DNS resource record sets for dnsName are consistent with endpoints.