RouterOS currentブランチがアップデートするのに合わせて、bugfixブランチもアップデートしていました。
こちらも更新内容が多めですが、基本的に新機能の追加は行われないはずなので安心してアップデートできると思います。
What's new in 6.37.4 (2017-Jan-13 06:52): *) bonding - fixed "tx-drop" on VLAN over bonding on x86; *) certificates - added year cap (invalid-after date will not exceed year 2039); *) certificates - fixed crash when crl is removed while it is being fetched; *) certificates - fixed fail on import from CAPs when both key and name already exist; *) crs - added comment ability in more switch menus; *) dhcpv6-client - fixed DHCPv6 rebind on startup; *) dhcpv6-server - fixed server removal crash if static binding was present; *) dns - fixed typo in regexp error message; *) dude - (changes here: https://wiki.mikrotik.com/wiki/Manual:The_Dude_v6/dude_v6.xx_changelog); *) export - updated default values to clean up export compact; *) fan - improved RPM monitor on CCR1009; *) 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 - nat action "netmap" now requires to-addresses to be specified; *) health - report fan speed for RB800 and RB1100 when 3-pin fan is being used; *) 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; *) ipsec - fixed kernel failure on tile with sha256 when hardware encryption is not being used; *) ipv6 - added warning about having interface MTU less than minimal IPv6 packet fragment (1280); *) ipv6 - moved empty IPv6 pool error message to error topic; *) led - fixed dark mode for cAP 2nD (https://wiki.mikrotik.com/wiki/Manual:System/LEDS#Leds_Setting); *) license - fixed demo license expiration after installation on x86; *) log - improved firewall log messages when NAT has changed only connection ports; *) lte - increased delay when setting sms send mode; *) metarouter - fixed startup process (introduced in 6.37.2); *) 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; *) proxy - fixed "max-cache-object-size" export; *) proxy - speed-up almost empty disk cache clean-up; *) queue - fixed "time" option by recognizing weekday properly (introduced in v6.37.2); *) quickset - various small changes; *) rb750Gr3 - fixed ipsec with 3des+md5 to work on this board; *) rb751u - fixed ethernet LEDs; *) snmp - always report bonding speed as speed from first bonding slave; *) snmp - fixed rare crash when incorrectly formatted packet was received; *) ssh - fixed high memory consumption when transferring file over ssh tunnel; *) switch - fix BPDU dynamic Host table entry on Atheros Gigabit switch chips; *) time - updated time zones; *) traceroute - fixed memory leak; *) trafficgen - fixed compact export when "header-stack" includes tcp; *) 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 properly interface last-link-up/down times; *) webfig - show properly large BGP AS numbers; *) winbox - added "Complete" flag to arp table; *) winbox - added "make-static" to IPv6 DHCP server bindings; *) winbox - added "prefix-pool" to DHCPv6 server binding; *) winbox - added upstream flag to IGMP proxy interfaces; *) winbox - allow to enable/disable traffic flow targets; *) winbox - allow to specify "connection-bytes" & "connection-rate" for any protocol in “/ip firewall” rules; *) winbox - allow to specify "sip-timeout" under ip firewall service-ports; *) winbox - do not allow to set "loop-protect-send-interval" to 0s; *) winbox - do not create empty rates.vht-basic/supported-mcs if not specified in CAPsMAN; *) 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 - properly show VHT basic and supported rates in CAPsMAN; *) winbox - show all related HT tab settings in 2GHz-g/n mode; *) winbox - show dynamic IPv6 pools properly; *) winbox - show errors on IPv6 addresses; *) winbox - show proper ipv6 connection timeout; *) winbox - specify metric for “/ip dns cache-used” setting; *) wireless - fixed full "spectral-history" header print on AP modes; *) wireless - fixed upgrade from older wireless packages when AP interface had empty SSID; *) wireless - show comment on "security-profile" if it is set;
バグ修正が主な内容ですが、その他にもWinboxの動作関連も修正が入っています。こちらについてはバージョンが0.2上がっているので仕方がないかと思います。
currentブランチについてはIPsec/IKEv2周りの機能追加があるので、そちらが気にならなければbugfixブランチでも大丈夫かと思います。
MikroTik Routers and Wireless: Software /
http://www.mikrotik.com/download
