Michael Tremer

IPFire 2.19 - Core Update 106 is available for testing
by Michael Tremer, October 21, 2016

Finally, the next Core Update with number 106 is available for testing. It comes with a number of exciting new features, many bug fixes and a few security improvements. Please help us testing!

Change of the DNS Proxy

IPFire used dnsmasq as DNS proxy before which is now replaced by unbound. The latter is in contrast to the former software that is specifically designed as an DNS forwarding proxy or DNS recursor and implemented DNSSEC from early on.

Because of our decision to enable DNSSEC by default and various problems in dnsmasq we have been toying with the idea of replacing it for a very long time. Unfortunately development resources are tight and because of this being a substantial part of the system and hooked into many other things, this was a very time-consuming project.

Finally, this new solution should now bring various advantages:


unbound is multi-threaded and IPFire will start one thread per CPU core that is available. That will allow execution of multiple queries in parallel which should increase responsiveness and throughput.

The cache size is adjusted based on memory available on the system. Bigger systems will have a significantly bigger DNS cache which will speed up browsing especially in larger environments like universities with a large number of clients.

Better DNSSEC reliability

DNSSEC is enabled by default (as it was before). However, unbound does not rely on the upstream servers being validating resolvers, too. This will bring DNSSEC to many more users. DNS servers are now tested before being passed on for use and any malfunctioning DNS servers won’t be used. Status of this can be seen on the user web interface.

Please see this list of various DNS services on the Internet for more details.

If none of the DNS servers configured or received from the provider can be used, unbound will fall back to full recursor mode.

With the next key rollover of the DNS root zone, IPFire will automatically download and validate the new key according to RFC5011.

Enhanced Features

DHCP leases will be published into the local DNS zone as before. Static leases are imported as well which is a new feature. Everything IP address will resolve to its hostname by publishing PTR records.


Updated Packages

This update installs a large number of updated packages:


Updated Packages

As always, we would like to ask all users to participate in testing which will highly improve the quality of this update.

Please report any bugs to our bug tracker and provide any feedback on our development mailing list.

Posted: October 21, 2016 • 2109 views