MikroTik RouterOS Firmware 6.22

Fixes:

- ovpn - added support for null crypto;
- files - allow to remove empty disk folders;
- sntp - fix problems with dns name resolving failures that were triggering system watchdog timeout;
- improved connection-state matcher in firewall - can match multiple states in one rule, supports negation;
- added connection-nat-state matcher - can match connections that are srcnatted, dstnatted or both;
- 100% CPU load caused by DNS service fixed;
- 100% CPU load caused by unclassified services fixed;
- 6to4 tunnel fixed;
- new RouterBOOT firmware for Metal 2SHPn to improve wireless stability;

eoip/eoipv6/gre/gre6/ipip/ipipv6/6to4 tunnels have new features:

- tunnels go down when no route to destination;
- tunnels go down for 1 minute when transmit loop detected, warning gets logged;
- new keepalive-retries setting;
- keepalives enabled by default for new tunnels (10sec interval, 10 retries);

The package includes all the files for the following architectures:

- mipsbe
- mipsle
- ppc
- tile
- x86

About Router Firmware:

Before you consider downloading this firmware, go to the system information page of the router and make sure that the currently installed version isn't either newer or matching this release.

Due to the large variety of router models and different methods for upgrading the device, it is highly recommended that you read and, above all, understand the installation steps before you apply the new firmware, even if you are a power user.

In theory, these steps shouldn't be much of a hassle for anyone, because manufacturers try to make them as easy as possible, even if they don't always succeed. Basically, you must upload the new firmware to the router through its administration page and allow it to upgrade.

If you install a new version, you can expect increased security levels, different vulnerability issues to be resolved, improved overall performance and transfer speeds, enhanced compatibility with other devices, added support for newly developed technologies, as well as several other changes.

If you're looking for certain safety measures, remember that it would be best if you perform the upload using an Ethernet cable rather than a wireless connection, which can be interrupted easily. Also, make sure you don't power off the router or use its buttons during the installation, if you wish avoid any malfunctions.

If this firmware meets your current needs, get the desired version and apply it to your router unit; if not, check with our website as often as possible so that you don't miss the update that will improve your device.