From c50a2e349212803ee303a00609b665e220134af6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Gon=C3=A9ri=20Le=20Bouder?= <goneri@lebouder.net>
Date: Fri, 10 Dec 2021 16:37:45 -0500
Subject: [PATCH] bsd/resolv.d/ avoid duplicated entries

Ensure we don't add duplicated nameserver or searchdomains.
This can happen on OpenBSD because of dhcpleased.
---
 cloudinit/net/bsd.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/cloudinit/net/bsd.py b/cloudinit/net/bsd.py
index dc322582c78..ff5c74131fd 100644
--- a/cloudinit/net/bsd.py
+++ b/cloudinit/net/bsd.py
@@ -138,14 +138,14 @@ def _resolve_conf(self, settings):
             resolvconf.parse()
 
         # Add some nameservers
-        for server in nameservers:
+        for server in set(nameservers):
             try:
                 resolvconf.add_nameserver(server)
             except ValueError:
                 util.logexc(LOG, "Failed to add nameserver %s", server)
 
         # And add any searchdomains.
-        for domain in searchdomains:
+        for domain in set(searchdomains):
             try:
                 resolvconf.add_search_domain(domain)
             except ValueError: