I’m currently running ROS v7.18.1 on my hAP ax^3, and I want to enable IPv6 Fasttrack support.
When I go into the settings of my machine to do this though, the option is greyed out:
It isn’t clear what the requirements to enable this are - is anyone able to provide me with any tips on what might be preventing me from enabling this feature?
The best explanation Ive seen is probably at the bottom here:
https://help.mikrotik.com/docs/spaces/ROS/pages/328227/Packet+Flow+in+RouterOS#PacketFlowinRouterOS-FastTrack
although its not been updated for IPv6.
Requirements
IPv4 FastTrack is active if the following conditions are met:
no mesh, metarouter interface configuration;
sniffer, torch, and traffic generator are not running;
“/tool mac-scan” is not actively used;
“/tool ip-scan” is not actively used;
FastPath and Route cache are enabled under IP/Settings (route cache condition does not apply to RouterOS v7 or newer);
bridge FastPath is enabled if a connection is going over the bridge interface;
Notice also there are some other exceptions listed in the article such as
FastTrack can process packets only in the main routing table so it is the system administrator duty to not FastTrack connections that are going through non-main routing table (thus connections that are processed with mangle action=mark-routing rules). Otherwise packets might be misrouted though the main routing table.
Probably best to post a full export of your config here (with anything secret redacted) for the folks here with more experience to look over.
/ipv6 firewall filter
add action=fasttrack-connection chain=forward comment=\
"special dummy rule to enable fasttrack6 connections" connection-state=\
established,related
And place it before your established/related “generic rule” or where you want…