Update dnsupdate.md

Added the SQL statements for adding the ALLOW-DNSUPDATE-FROM for the reverse zone. This was needed to make dnsupdate work completely on my personal PowerDNS server when updated remotely from my Sophos UTM. Without it, no records were added to the reverse lookup zone when dhcpd pushed updates.

diff --git a/docs/markdown/authoritative/dnsupdate.md b/docs/markdown/authoritative/dnsupdate.md
index e8b3e01d15511f3d7f0802eb6ac0d74439969d92..fb6ca9148bda3b32d8d6804f1936909e2a2917ce 100644 (file)
--- a/docs/markdown/authoritative/dnsupdate.md
+++ b/docs/markdown/authoritative/dnsupdate.md
@@ -206,12 +206,15 @@ This tells PowerDNS to:
 1.  Enable DNS update support([`dnsupdate`](settings.md#dnsupdate))
 2.  Allow updates from NO ip-address ([`allow-dnsupdate-from=`](settings.md#allow-dnsupdate-from))
 
-We just told powerdns (via the configuration file) that we accept updates from nobody via the [`allow-dnsupdate-from`](settings.md#allow-dnsupdate-from) parameter. That's not very useful, so we're going to give permissions per zone, via the domainmetadata table.
+We just told powerdns (via the configuration file) that we accept updates from nobody via the [`allow-dnsupdate-from`](settings.md#allow-dnsupdate-from) parameter. That's not very useful, so we're going to give permissions per zone (including the appropriate reverse zone), via the domainmetadata table.
 
 ```
 sql> select id from domains where name='example.org';
 5
-sql> insert into domainmetadata(domain_id, kind, content) values(5, ‘ALLOW-DNSUPDATE-FROM’,’127.0.0.1’);
+sql> insert into domainmetadata(domain_id, kind, content) values(5, 'ALLOW-DNSUPDATE-FROM','127.0.0.1');
+sql> select id from domains where name='1.168.192.in-addr.arpa';
+6
+sql> insert into domainmetadata(domain_id, kind, content) values(6, 'ALLOW-DNSUPDATE-FROM','127.0.0.1');
 ```
 
 This gives the ip '127.0.0.1' access to send update messages. Make sure you use the ip address of the machine that runs **dhcpd**.