V7.21.1 [stable] is released!

[rextended]

If it has never been done, you should do what is described in the link, because the upgrade/update does not do it:

Fix for BUGS, ERRORS on default RouterOS firewall rules and firewall changes from 6.43 to 7.22beta3

Fix for BUGS, ERRORS on default RouterOS firewall rules and firewall changes from 6.43 to 7.22beta3 without reset to default for the fix. Just paste on terminal, fix all bugs or errors on default RouterOS firewall rules and align only default parts it to 7.22beta3 the remaining rules are untouched, so do not fix your errors. For RouterOS v6 /ip firewall address-list remove [find where list=bad_ipv6 and address="::224.0.0.0/100"] remove [find where list=bad_ipv6 and address="::127.0.0.0/104…