6.42.9 changelog:

Important note!!! Backup before upgrade!
RouterOS v6.41 and above contains new bridge implementation that supports hardware offloading (hw-offload).
This update will convert all interface "master-port" configuration into new bridge configuration, and eliminate "master-port" option as such.
Bridge will handle all Layer2 forwarding and the use of switch-chip (hw-offload) will be automatically turned on based on appropriate conditions.
The rest of RouterOS Switch specific configuration remains untouched in usual menus.
Please, note that downgrading below RouterOS v6.41 will not restore "master-port" configuration, so use backups to restore configuration on downgrade.

*) bridge - ignore tagged BPDUs when bridge VLAN filtering is used;
*) bridge - improved packet handling when hardware offloading is being disabled;
*) crs317 - fixed packet forwarding on bonded interfaces without hardware offloading;
*) crs326/crs328 - fixed packet forwarding when port changes states with IGMP Snooping enabled;
*) defconf - properly clear global variables when generating default configuration after RouterOS upgrade;
*) dns - fixed DNS cache service becoming unresponsive when active Hotspot server is present on the router (introduced in 6.42);
*) filesystem - fixed NAND memory going into read-only mode (requires "factory-firmware" >= 3.41.1 and "current-firmware" >= 6.43);
*) health - added missing parameters from export;
*) health - fixed voltage measurements for RB493G devices;
*) hotspot - properly update dynamic "walled-garden" entries when changing "dst-host";
*) ike2 - fixed rare authentication and encryption key mismatches after rekey with PFS enabled;
*) ike2 - improved subsequent phase 2 initialization when no child exist;
*) ipsec - improved invalid policy handling when a valid policy is uninstalled;
*) ipsec - improved stability when using IPsec with disabled route cache;
*) led - added "dark-mode" functionality for wsAP ac lite, RB951Ui-2nD, hAP, hAP ac lite and LtAP mini devices;
*) lte - fixed LTE interface not working properly after reboot on RBSXTLTE3-7;
*) lte - fixed LTE registration in 2G/3G mode;
*) ospf - improved link-local LSA flooding;
*) ospf - improved stability when originating LSAs with OSPFv3;
*) routerboard - fixed memory tester reporting false errors on IPQ4018 devices ("/system routerboard upgrade" required);
*) routerboard - show "boot-os" option only on devices that have such feature;
*) routerboot - fixed RouterOS booting on devices with particular NAND memory;
*) sniffer - made "connection", "host", "packet" and "protocol" sections read-only;
*) supout - added "files" section to supout file;
*) upgrade - fixed RouterOS upgrade process from RouterOS v5 on PowerPC;
*) upnp - improved UPnP service stability when handling HTTP requests;
*) userman - fixed "shared-secret" parameter requiring "sensitive" policy;
*) w60g - added "frequency-list" setting;
*) w60g - fixed interface LED status update on connection;
*) w60g - fixed random disconnects;
*) w60g - general stability and performance improvements;
*) webfig - fixed time interval settings not applied properly under "IP/Kid Control/Kids" menu;
*) webfig - fixed www service becoming unresponsive;
*) winbox - show "System/RouterBOARD/Mode Button" on devices that has such feature;
*) wireless - accept only valid path for sniffer output file parameter;
*) wireless - fixed "/interface wireless sniffer packet print follow" output;

What's new in 6.42.8 (2018-Sep-21 13:30):

(factory only release)

Download the new 'RouterOS 6.42.9' version here: https://mikrotik.com/download