Dns not updating records from dhcp

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The script will run indefinitely when started this way.This is basically a way to simulate "nohup" without going down the path of installing extra software on Synology DSM just to avoid having to do a reboot the first time the software is installed. ####Troubleshooting Each time this script detects that that there is a DHCP change, DNS will be updated.2016-04-18 Fixed issue #5 (script output would redirect to the wrong place) 2016-04-18 Fixed issue #6 (documentation) 2016-04-18 Fixed issue #7 (added new lease file location for DSM 6.0) 2016-09-17 log file now prints out more debug information about both static and dynamic addresses populated into DNS records 2016-09-17 S99poll should now work correctly under both DSM 5 and DSM 6 2016-09-17 Fixed issue #11 Serial # is now updated for DNS zone master forward and reverse files 2017-02-22 Fixed issue #19 S99poll now has a "status" command and also handles the situation where multiple process may have been erroneously running 2017-03-06 diskstation_dns_now uses a more deterministic method for gathering network interfaces instead of making assumptions about which network interfaces are present PR #17 2017-03-06 diskstation_dns_now removes invalid characters from generated DNS hostnames per RFC 952 PR #17 ####Deployment You will need to: Warning If you manually start the server manually like this, this script will only run while you are logged on to the ssh console. DNS will not be updated from new reservations until this script is started again.To run the script permanently, you will need to reboot your Synology Diskstation.###Credit The script originated from Tim Smith here: v=T22xyt AWq3A&list=UUp8Gc SEe Un LY8d6RAT6Y3Mg ###changelog 2014-10-20 Modified to honor DNS static IP addresses For example, lets say you have configured DNS in synology DSM.You are manually assigning static IP addresses using the DSM GUI in the range of . However, without this script here, Synology will not update DNS records when the DHCP server assigns a new dynamic IP address.

2014-11-10 Fixed a bug where DNS update would fail if DHCP client does not specify a hostname 2014-11-23 A new script is available to update DNS within 10 seconds of a new DHCP reservation 2015-05-01 DHCP leases in are now supported.

Even if you think things are good, it doesn’t necessarily mean that everything is working as well as it should.

Most of you won’t be running Windows 2003 anymore, but if you are, this link may be of interest: DHCP setup primarily is the place to start with this, it is often overlooked that there needs to be a username entered into DHCP to allow for these Dynamic Updates to take place.

But if you are just messing around with something new, it is quite handy to have all of this taken care of for you. ##diskstation_dns_This script can be used to configure a synology diskstation to automatically update its internal DNS records from its internal DHCP server.

As of 2014-10-20 Synology Diskstation DSM cannot do this from the GUI.

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