From 2d7cfca67f3efac87ae25372c610341fe45980df Mon Sep 17 00:00:00 2001
From: Jamie Cameron <jcameron@webmin.com>
Date: Wed, 12 Jun 2024 16:52:50 -0700
Subject: [PATCH] Prevent duplicate also-notify and allow-transfer IPs

---
 bind8/bind8-lib.pl | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/bind8/bind8-lib.pl b/bind8/bind8-lib.pl
index 1f85e9250..496b46c88 100755
--- a/bind8/bind8-lib.pl
+++ b/bind8/bind8-lib.pl
@@ -1988,6 +1988,8 @@ if (@transfer) {
 		}
 	}
 if (@notify) {
+	my %done;
+	@notify = grep { !$done{$_->{'name'}}++ } @notify;
 	my $also = { 'name' => 'also-notify',
 		     'type' => 1,
 		     'members' => \@notify};
@@ -1996,6 +1998,8 @@ if (@notify) {
 				     'values' => [ 'yes' ] });
 	}
 if (@transfer) {
+	my %done;
+	@transfer = grep { !$done{$_->{'name'}}++ } @transfer;
 	my $allow = { 'name' => 'allow-transfer',
 		      'type' => 1,
 		      'members' => \@transfer };