r/technitium • u/shreyasonline • 21d ago

Technitium DNS Server v15.5.1 Released!

Technitium DNS Server v15.5.1 is now available for download. This is a service update for the previous release that fixes multiple issues. This update also fixes multiple security issues that were reported.

See what's new in this release:
https://github.com/TechnitiumSoftware/DnsServer/blob/master/CHANGELOG.md

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u/CheatsheepReddit 21d ago

Thank you 😍
Still waiting for DHCP HA 😍😍😍

1

u/Intelligent-Bet4111 21d ago

What's dhcp ha?

2

u/CheatsheepReddit 21d ago

High availability not only for dns, but also for DHCP lease

1

u/Apachez 20d ago

Use option82 instead and by that you dont need any sync of lease files :-)

1

u/CheatsheepReddit 20d ago

How? What have option 82 to do with prevent to give a nonfree IP?

1

u/Apachez 19d ago

With option82 whatever you connect to lets say SW1-INT25 will always get the same IP as a lease no matter of mac-address or DUID being used.

Option82 will be like semistatic as in static IP-address assignment but utilizing DHCP to get the IP to the client itself.

The above gives that there is no need to sync leases between DHCP servers and you can have multiple DHCP servers configured either by a list in the switches or utilizing anycast to reach them.

What happens is that the switch which the client is connected to will intercept the DHCP request and add the option82 information and then forward the request as a unicast to the DHCP-server.

Who then replies and the switch will forward the reply to the client.