6.42rc12 changelog:

*) bridge - fixed "mst-override" export;
*) chr - added "open-vm-tools" on VMware installations;
*) chr - added "qemu-guest-agent" on KVM installations;
*) chr - added "xe-daemon" on Xen installations;
*) chr - fixed interface naming order when adding more that 4 interfaces on VMware installations;
*) chr - fixed suspend on Xen installations;
*) chr - make additional disks visible under "/disk" on Xen installations;
*) chr - make virtio disks visible under "/disk" on KVM installations;
*) dhcpv6-server - added DHCPv4 style user options (CLI only);
*) interface - improved interface configuration responsiveness;
*) ippool - added ability to specify comment (CLI only);
*) kidcontrol - added initial support for "/ip kid-control" feature;
*) ppp - fixed change-mss functionality in some specific traffic (introduced in v6.41);
*) quickset - properly detect LTE interface on startup;
*) routerboard - added RouterBOOT "auto-upgrade" after RouterOS upgrade (extra reboot required) (CLI only);
*) snmp - added "/caps-man interface print oid";
*) snmp - improved request processing performance for wireless and CAP interfaces;
*) wireless - fixed "wds-slave" channel selection when single frequency is specified;

Other changes since 6.41:

*) bridge - fixed allowed MSTI priority values;
*) bridge - fixed bridge related settings conversation during upgrade from pre-v6.41 bridge implementation (introduced v6.41);
*) bridge - fixed hw-offload disabling for Mediatek and Realtek switches when STP/RSTP configured;
*) bridge - fixed hw-offload disabling when adding a port with "horizon" set;
*) bridge - fixed IGMP Snooping after disabling/enabling bridge;
*) bridge - fixed interface list moving in "/interface bridge port" menu;
*) bridge - fixed repetitive port "priority" set;
*) bridge - fixed situation when packet could be sent with local MAC as dst-mac;
*) bridge - properly update "actual-mtu" after MTU value changes (introduced v6.41);
*) btest - fixed TCP test accuracy when low TX/RX rates are used;
*) capsman - improved CAPsMAN responsiveness on systems with large amount of CAP interfaces;
*) certificate - do not use utf8 for SCEP challange password;
*) chr - automatically generate new systemID on first startup;
*) crs1xx/2xx - added BPDU value for "ingress-vlan-translation" menu "protocol" option;
*) crs317 - improved transmit performance between 10G and 1G ports;
*) crs326 - fixed possible packet leaking from CPU to switch ports;
*) crs3xx - hide deprecated VLAN related settings in "/interface ethernet switch port" menu;
*) detnet - additional work on "detect-internet" implementation;
*) detnet - fixed "detect-internet" feature unavailability if router had too long identity (introduced v6.41);
*) dhcpv4-server - added "dns-none" option to "/ip dhcp-server network dns";
*) dhcpv4-server - fixed framed and classless route received from RADIUS server;
*) dhcpv6-client - added info exchange support;
*) dhcpv6-client - added possibility to specify options (CLI only);
*) dhcpv6-client - added support for options 15 and 16;
*) dhcpv6-client - implement confirm after reboot;
*) discovery - fixed discovery related settings conversation during upgrade from pre-v6.41 discovery implementation (introduced v6.41);
*) dude - fixed e-mail notifications when default port is not used;
*) filesystem - fixed situations when "/flash" directory lost files after upgrade;
*) firewall - fixed "tls-host" firewall matcher (introduced v6.41);
*) firewall - limited maximum "address-list-timeout" value to 35w3d13h13m56s;
*) ike1 - display error message when peer requests "mode-config" when it is not configured;
*) ike1 - do not accept "mode-config" reply more than once;
*) ike1 - fixed "aes-ctr" and "aes-gcm" encryption algorithms (introduced v6.41);
*) ike2 - delay rekeyed peer outbound SA installation;
*) ike2 - improve half-open connection handling;
*) ipsec - fixed AES-CTR and AES-GCM support on RB1200;
*) ipsec - properly update IPsec secret for IPIP/EoIP/GRE dynamic peer;
*) log - properly report bridge interface MAC address changes;
*) lte - do not add DHCP client on LTE modems that doesn't use DHCP;
*) lte - fixed DHCP client adding for MF823 modem;
*) mac-ping - fixed duplicate responses;
*) modem - added initial support for AC340U;
*) poe-out - do not show "poe-out-current" on devices which can not determine it;
*) ppp - allow to override remote user PPP profile via "Mikrotik-Group";
*) ppp - changed default value of "route-distance" to 1;
*) quickset - show "G" flag for guest users;
*) radius - added warning if PPP authentication over RADIUS is enabled;
*) radius - increase allowed RADIUS server timeout to 60s;
*) rb1100ahx4 - fixed reset button responsiveness when regular firmware is used;
*) routerboot - fixed missing upgrade firmware for "ar7240" devices;
*) snmp - added w60g support;
*) snmp - allow also IPv6 on default public community;
*) snmp - fixed SNMP for w60g interfaces;
*) ssh - improved key import error messages;
*) tile - added "aes-ctr" hardware acceleration support;
*) tile - fixed USB device speed detection after reboot;
*) tile - improved stability in high throughput HW accelerated IPsec setups ("/system routerboard upgrade" required);
*) tr069-client - added "DownloadDiagnostics" and "UploadDiagnostics";
*) tr069-client - fixed HTTPS authentication process;
*) traffic-flow - do not count single extra packet per each flow;
*) webfig - added support for proper default policies when adding script or scheduler job;
*) webfig - fixed bridge port sorting order by name;
*) webfig - fixed MAC address ordering;
*) webfig - fixed wireless snooper address, SSID and other column ordering;
*) winbox - added "dhcp-option-set" to DHCP server;
*) winbox - added "insert-queue-before" to DHCP server;
*) winbox - added DHCPv6 client info request type and updated statuses;
*) winbox - added possibility to delete SMS from inbox;
*) winbox - allow to open bridge host entry;
*) winbox - allow to specify "to-ports" for "action=masquerade";
*) winbox - do not show "hw" option on non-ethernet interfaces;
*) winbox - do not show VLAN related settings in switch port menu on CRS3xx boards;
*) winbox - fixed "/tool e-mail send" attachment behavior;
*) winbox - improved stability when using trackpad scrolling in large lists;
*) winbox - show Bridge Port PVID column by default;
*) wireless - fixed nv2 (introduced in v6.42rc);
*) wireless - fixed nv2 protocol on ARM platform SXTsq devices;
*) wireless - improved wireless scan functionality for devices with multiple wireless interfaces;
*) wireless - updated "Czech Republic" country 5.8 GHz frequency range;

Download the new 'RouterOS 6.42rc12' version here: https://www.mikrotik.com/download