From d3c1d0f65390dd595441ac3dca1cf52db790ddad Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mat=C4=9Bj=20D?= <matej@divecky.com>
Date: Mon, 6 Feb 2023 15:48:22 +0100
Subject: [PATCH] Fix issue where octodns was failing on missing TTL value for
 NS records in PTR zones

---
 octodns_netbox_dns/__init__.py | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/octodns_netbox_dns/__init__.py b/octodns_netbox_dns/__init__.py
index e14c54f..291617b 100644
--- a/octodns_netbox_dns/__init__.py
+++ b/octodns_netbox_dns/__init__.py
@@ -110,10 +110,18 @@ class NetBoxDNSSource(octodns.provider.base.BaseProvider):
             name = nb_record.name
             if name == "@":
                 name = ""
+
+            nb_zone_default_ttl = nb_zone.default_ttl
+            if nb_record.ttl:
+                nb_ttl = nb_record.ttl
+            elif nb_record.type == "NS":
+                nb_ttl = nb_zone.soa_refresh
+            else:
+                nb_ttl = nb_zone_default_ttl
             data = {
                 "name": name,
                 "type": nb_record.type,
-                "ttl": nb_record.ttl,
+                "ttl": nb_ttl,
                 "values": [],
             }
             rdata = dns.rdata.from_text("IN", nb_record.type, nb_record.value)