RouterOS Release 6.38

La nueva versión del RouterOS 6.38 soporta el STP por hardware en aquellos equipos que tengan el chip SWITCH y los CRS. También añade la opción local-proxy-arp. (Todas las respuestas ARP llevarán la MAC del Router en la interfaz que lo tenga configurado.)

IMPORTANTE! Se recomienda actualizar todos los dispositivos a esta versión si se utiliza una red bridgeada usando VLAN y STP/RSTP, a fin de evitar problemas de compatibilidad.

Lista de cambios completa:

Important note!!!
RouterOS v6.38 contains STP/RSTP changes which makes bridges compatible with IEEE 802.1Q-2014 by sending and processing BPDU packets without VLAN tag.
To avoid STP/RSTP compatibility issues with older RouterOS versions, upgrade RouterOS to v6.38 on all routers in Layer2 networks with VLAN and STP/RSTP configurations.
The recommended procedure is to start by upgrading the remotest routers and gradually do it to the Root Bridge device.
If after upgrade you experience loss of connectivity, then disabling STP/RSTP on RouterOS bridge interface will restore connectivity so you can complete upgrade process on your network.

!) ipsec – added IKEv1 xauth user authentication with RADIUS “/ip ipsec user settings set xauth-use-radius=yes”;
!) ipsec – added IKEv2 support;
!) ipsec – added IKEv2 EAP RADIUS passthrough authentication for responder;
!) ipsec – added support for unique policy generation;
!) ipsec – removed IKEv1 ah+esp support;
!) snmp – added basic get and walk functionality “/tool snmp-[get|walk]”;
!) switch – added hardware STP functionality for CRS devices and small Atheros switch chips (;
!) tr069-client – initial implementation (as separate package) (cli only);
!) winbox – Winbox 3.7 is the minimum version that can connect to RouterOS;
*) arp – added “local-proxy-arp” feature;
*) bonding – added “forced-mac-address” option;
*) bonding – fixed “tx-drop” on VLAN over bonding on x86;
*) bridge – fixed rare crash on bridge port removal;
*) bridge – fixed VLAN BPDU rx and tx when connected to non-RouterOS device with STP functionality;
*) bridge – require admin-mac to be specified if auto-mac is disabled;
*) bridge – show bridge port name in port monitor;
*) capsman – added “group-key-update” parameter;
*) capsman – added possibility to change arp, mtu, l2mtu values in datapath configuration;
*) capsman – fixed CAP upgrade when separate wireless package is used (introduced in 6.37);
*) capsman – use correct source address in reply to unicast discovery requests;
*) ccr – added AHCI driver for Samsung XP941 128GB AHCI M.2;
*) certificates – added support for PKCS#12 export;
*) certificates – allow import multiple certs with the same key;
*) certificates – fixed crash when crl is removed while it is being fetched;
*) certificates – fixed trust chain update on local certificate revocation in programs using ssl;
*) certificates – if no name provided create certificate name automatically from certificate fields;
*) console – fixed multi argument value unset;
*) crs – added comment ability in more switch menus;
*) crs – fixed rare kernel failure on switch reset (for example, reboot);
*) dhcp – fixed DNS server assignment to client if dynamic server exists and is from another IP family;
*) dhcp – fixed issue when dhcp-client was still possible on interfaces with “slave” flag and using slave interface MAC address;
*) dhcp – show dhcp server as invalid and log an error when interface becomes a slave;
*) dhcp-server – fixed when wizard was unable to create pool >dhcp_pool99;
*) discovery – added LLDP support;
*) discovery – removed 6to4 tunnels from “/ip neighbor discovery menu”;
*) dns – added “max-concurrent-queries” and “max-concurrent-tcp-sessions” settings;
*) dude – (changes discussed here:;
*) ethernet – added “k” and “M” unit support to Ethernet Bandwidth setting;
*) ethernet – fixed “tx-fcs-error” on SFP+ interfaces when loop-protect is enabled;
*) export – do not show interface comment in “/ip neighbor discovery” menu;
*) export – updated default values to clean up export compact;
*) fastpath – fixed rare crash;
*) fastpath – fixed x86 bridge fast-path status shown as active even if it is manually disabled;
*) file – fixed file manager crash when file transfer gets cancelled;
*) firewall – added “creation-time” to address list entries;
*) firewall – added sctp/dccp/udp-lite support for “src-port”, “dst-port”, “port” and “to-ports” firewall options;
*) firewall – do not defragment packets which are marked with “notrack” in raw firewall;
*) firewall – fixed “time” option by recognizing weekday properly (introduced in v6.37.2);
*) firewall – fixed dynamic raw rule behaviour;
*) firewall – fixed rule activation if “time” option is used and no other active rules are present;
*) firewall – increased max size of connection tracking table to 1048576;
*) firewall – new faster “connection-limit” option implementation;
*) firewall – significantly improved large firewall rule set import performance;
*) graphing – fixed queue graphs showing up in web interface if aggregate name size >57840 symbols;
*) health – show power consumption on devices which has voltage and current monitor;
*) hotspot – fixed nat rule port setting in “hs-unauth-to” chain by changing it from “dst-port” to “src-port” on Walled Garden ip “return” rules;
*) interface – changed loopback interface mtu to 1500;
*) interface – do not treat multiple zeros as single zero on name comparison;
*) interface – show link stats in “/interface print stats-detail” output;
*) ipsec – added ability to specify static IP address at “send-dns” option;
*) ipsec – added ph2 accounting for each policy “/ip ipsec policy ph2-count”;
*) ipsec – allow to specify explicit split dns address;
*) ipsec – changed logging topic from error to debug when empty pfkey messages are received;
*) ipsec – do not auto-negotiate more SAs than needed;
*) ipsec – ensure generated policy refers to valid proposal;
*) ipsec – fixed camellia crypto algorithm module loading;
*) ipsec – fixed IPv6 remote prefix;
*) ipsec – fixed kernel failure on tile with sha256 when hardware encryption is not being used;
*) ipsec – fixed peer configuration my-id IPv4 address endianness;
*) ipsec – fixed ph2 auto-negotiation by checking policies in correct order;
*) ipsec – load ipv6 related modules only when ipv6 package is enabled;
*) ipsec – make generated policies always as unique;
*) ipsec – non passive peers will also establish SAs from policy without waiting for the first packet;
*) ipsec – optimized logging under ipsec topic;
*) ipsec – show active flag when policy has active SA;
*) ipsec – show SA “enc-key-size”;
*) ipsec – split “mode-config” and “send-dns” arguments;
*) ipv6 – added “no-dad” setting to ipv6 addresses;
*) ipv6 – fixed “accept-router-advertisements” behaviour;
*) ipv6 – moved empty IPv6 pool error message to error topic;
*) lcd – improved performance, causes less cpu load;
*) led – fixed dark mode for cAP 2nD (;
*) log – fixed “System rebooted because of kernel failure” message to show after 1st crash reboot;
*) lte – added support for more Vodafone K4201-Z, Novatel USB620L, PANTECH UML295 and ZTE MF90 modems;
*) lte – allow to execute concurrent info commands;
*) lte – fixed dwm-222, Pantech UML296 support;
*) lte – fixed init delay after power reset;
*) lte – increased delay when setting sms send mode;
*) lte – return info data when all the fields are populated;
*) metarouter – fixed startup process (introduced in 6.37.2);
*) mmips – fixed traffic accounting in “/interface” menu;
*) ospf – fixed route crash caused by memory corruption when there are multiple active interfaces;
*) ppp – fixed packet size calculation when MRRU is set (was 2 bytes bigger than MTU allows);
*) ppp – significantly improved shutdown speed on servers with many active tunnels;
*) ppp – significantly improved tunnel termination process on servers with many active tunnels;
*) profile – added “bfd” and “remote-access” processes;
*) profile – added ability to monitor cpu usage per core;
*) profile – make profile work on mmips devices;
*) profile – properly classify “wireless” processes;
*) queue – fixed “time” option by recognizing weekday properly (introduced in v6.37.2);
*) radius – added IPSec service (cli only);
*) rb750Gr3 – fixed ipsec with 3des+md5 to work on this board;
*) rb850Gx2 – fixed pcb temperature monitor if temperature was above 60C;
*) resolver – ignore cache entries if specific server is used;
*) routerboot – show log message if router CPU/RAM is overclocked;
*) script – increment run count value when script is executed from snmp;
*) snmp – always report bonding speed as speed from first bonding slave;
*) snmp – fixed rare crash when incorrectly formatted packet was received;
*) snmp – provide sinr in lte table;
*) ssh – added routing-table setting (cli only);
*) ssh – fixed lost “/ip ssh” settings on upgrade from version older than 5.15;
*) system – reboot device on critical program crash;
*) tile – fixed kernel failure when when IPv6 ICMP packet is sent through PPP interface;
*) time – updated time zones;
*) traceroute – fixed memory leak;
*) traffic-flow – fixed flow sequence counter and length;
*) trafficgen – fixed compact export when “header-stack” includes tcp;
*) trafficgen – fixed crash when IPv6 traffic is processed;
*) trafficgen – fixed potential crash when very big frame is generated;
*) trafficgen – improved fastpath support;
*) tunnel – fixed transmit packets occasionally not going through fastpath;
*) tunnel – properly export keepalive value;
*) usb – fixed kernel failure when Nexus 6P device is removed;
*) users – added minimal required permission set for full user group;
*) users – added TikApp policy;
*) vlan – allow to add multiple VLANs which name starts with same number and has same length;
*) vrrp – do not show unrelated log warning messages about version mismatch;
*) watchdog – do not send supout file if “auto-send-supout” is disabled;
*) webfig – added extra protection against XSS exploits;
*) webfig – show ipv6 addresses correctly;
*) webfig – show properly interface last-link-up/down times;
*) winbox – added “Complete” flag to arp table;
*) winbox – added “untracked” option to firewall “connection-state” setting;
*) winbox – added Dude icon to Dude menu;
*) winbox – allow to enable/disable traffic flow targets;
*) winbox – allow to run profile from “/system resources” menu;
*) winbox – allow to specify interface for leds with “interface-speed” trigger;
*) winbox – do not allow to set “loop-protect-send-interval” to 0s;
*) winbox – do not show hotspot user profile incoming and outgoing filters and marks as set if there is no value specified;
*) winbox – fixed crash when legacy Winbox version was used;
*) winbox – fixed default values for interface “loop-protect-disable-time” and “loop-protect-send-interval”;
*) winbox – fixed missing “IPv6/Settings” menu;
*) winbox – fixed typo in “propagate-ttl” setting;
*) winbox – make cert signing include provided ca-crl-host;
*) winbox – moved ipsec peer “exchange-mode” to General tab;
*) winbox – properly show VHT basic and supported rates in CAPsMAN;
*) winbox – removed spare values from loop-protect menu;
*) winbox – show all related HT tab settings in 2GHz-g/n mode;
*) winbox – show primary and secondary ntp addresses as if none are set;
*) winbox – show proper ipv6 connection timeout;
*) wireless – added API command to report country-list (/interface/wireless/info/country-list);
*) wireless – added CRL checking for eap-tls;
*) wireless – fixed action frame handling for WDS nodes;
*) wireless – fixed custom channel extension-channel appearance in console;
*) wireless – fixed full “spectral-history” header print on AP modes;
*) wireless – fixed rare kernel failure when connecting to nv2 access point with legacy rate select;
*) wireless – fixed upgrade from older wireless packages when AP interface had empty SSID;
*) wireless – take in account channel width when returning supported channels;
*) wireless – use VLAN ID 0 in RADIUS message to disable VLAN tagging;

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