My site is probed by IPv6 traffic, but I use only IPv4. Looking at the firewall to drop IPv6 packets, but can't find a way to designate all IPv6 on the FORWARD chain. What am I missing?
routerOS 6.43.11 (about to upgrade to current).

If you have /ipv6 menu tree, try

Or, alternatively, if you don't want to run IPv6 at all, disable ipv6 package.

Thanks, mkx, for the quick reply. The procedure is at the command line, right? Not available in winbox or the webconfig?

The structure in GUI is the same ... IPv6 -> Firewall -> Filter Rules -> Add New ... and only select and configure needed fields, don't select (open) the rest ... and if there are other rules, be sure to drag the new rule to the top of the list, rules are processed from top to bottom and first matching stops further processing