RB450, RB2011UiAS-2HnD, RB1100AHX2, CCR1036-12G-4S all updated ok
Running PPPoE, OSPF, MPLS and TE
Ade
Sorry, I have posted that for prevent question like “Are fixed this problem…?” not written on change log.
I can give a nickname to this version “CRS Evolution version” it is good that these changes got out as soon as possible, now at least we can start using CRS properly.
I’m sure there will be other version with other fixes soon enough. And if MT fixes your bug you usually can get a RC version to verify that bug is solved.
Now i have lots of new toys in “Switch” menu 
Winbox checkboxes and textboxes are back to pre v6.11 style … good work! I see new switch menu design in winbox on crs125.
upgraded crs125, 450g, 711ua-2hnd, 751u-2hnd, 751g-2hnd, 951g-2hnd, 951ui-2hnd, 2011uas-rm, 2011uas-2hnd-in 912u-2hnd and rb800 to 6.12 + firware where applicable without any issues. All running fine (ipsec, ospf, l2tp)
JF.
OpenVPN server doesn’t work! The same TLS failed error in log as it was in 6.11. Downgrade to 6.10
Still loosing interfaces in /Interface Bridge Filters. It will take the interface in the rule then after about 3 seconds after hitting apply it will minimize the interface field on the general page. If I reopen the field it is still, but re-minimizes as soon as OK, or Apply is hit. So the ability to mark packets by interface in a bridge seems to be lost.
Anyone tried DHCP server on VLAN with this ? Is all fine now ?
Try yourself and post the result.
6.12 completely broke my ipsec/l2tp tunnels. Not sure what the problem is at this point, but i’ll be moving back to 6.11 until i figure it out..
Interesting. Mine are working just fine.
For the first time since about 6.5 upgrading DID NOT break my IPSEC tunnels Thanks Mikrotik.
6.12 broke my CRS’s, had to go into serial console to reset configuration and build the config as new, system just hangs after updating.
Another CRS hangs even after the reset-configuration, im trying to reproduce it so i can get an supout (if that works at least, since the switch disables ALL ports when it hangs).
Addenum:
Trunk feature does not work properly, trunk stops forwarding packages after some time (802.11ad LACP), after removing and recreating the trunk it works for a while, and then stops working again.
Upgrade to 6.12 FW 3.13 no worries on CCR1016-12G. Had major L2TP issues with 6.11 rolled back to 6.6 and have now updated to 6.12 to test L2TP Buffer space issue is resolved.
Five Hours in. So far so good… Fingers crossed for a full recovery from two weeks of absolute instability.
Upgraded from 5.26 to 6.12 on RB750GL and RB450G, so far so good.
Ticket#2014032466000827 not fixed, it is not working in last couple version, also other user on forum confirm bug.
When it will be fixed ?
Sorry, unable to comply. Every version since 6.5 has been a huge disappointment so far resulting major outages. Cannot risk that production environment device. To be honest this “try yourself and post result” attitude got me thinking, that maybe I should fix it myself, too. Or simply not use DHCP maybe ? 
IPSEC was totally broken after upgrade from 6.11 and from 5.26. Comments in the changelog on need of changes in a config are absent.
This is the community forums, IF you have bugs that you want fixed you should email support, if something breaks during/after an upgrade you can email support for support (or the company that have sold you the unit).
Here people will say try it, and post results, as that is what we all do 
Community is willing to help you, but if you did not try it first yourself, there is nothing we can help, as we do not know your situation nor configuration.
And new features, or bugfixes are fixed (maybe not but thats something WE as community test).
ps. this is not to flame at you! we are merely trying to help you.
CRS test unit on 6.12 runs sweet as.
You did not have to reset the configuration ?