Hello!
I’m sorry, I tried to find this answer on Internet and haven’t found. This is my first expirience with Mikrotik. The RouterOS is great, but… the simple task I can do with other software: I need to delete some communities from prefix in filter. In other words I need cisco like:
route-map rm-bgp-uwes-out permit 1300
match community 30910:1122
set as-path prepend 30910 30910
set comm-list 30910:ALL delete
Thanks in advance,
Boris
/routing filters add action=accept bgp-communities=30910:1122 chain=rm-bgp-uwes-out set-bgp-communities="" set-bgp-prepend=2
This should be the equivalent of the cisco filter you posted.
It matches any prefixes with BGP community 30910:1122, and it strips any bgp communities and adds a prepend of 2 (30910 30910).
Your peer(s) should have an Outgoing filter that either jumps to this (rm-bgp-uwes-out) or simply use this one directly (I don’t know what other rules you might have)
Cha0s, your example is good, but not suitable for me. In my example I only need to delete communities started with 30910:, all other communities MUST passthrought
Not possible at the moment 
May be this is already planned for future version?
If this will ever be implemented, it will be on version 7.
Mikrotik has announced that they will not provide any updates to the routing package on v6.
Ough So, what is roadmap for v7?
There is no roadmap for v7 - There have been a few teasers posted about it, but Mikrotik has made no announcements regarding an expected release timeframe.
Some people have started to jokingly refer to it as “ROS Longhorn”