No, you can’t make a backup.
regarding the “how buggy” It depends what you want to do, in the normal “home/office” use case, it should be fine. I did not have any issues with mine on both RB5009 and RB4011 when using rc4.
I’m using IPv4/IPv6 with firewall, OSPF, Wireguard and ZeroTier (testing) with no issues for now
Next BUG, reported: SUP-61789
Ping for timeout with count=1 return nil instead of 0
Ping for ‘net unreachable’ with count=[1,2] return nil instead of 0
workaround: just use count=3 or more
using igmp-snooping with frame-types breaks VLAN interfaces:
With igmp-snooping enabled on bridge interface, setting frame-types=admit-only-untagged-and-priority-tagged or admit-only-vlan-tagged will block the access to VLAN interfaces on that bridge interface. Disabling igmp-snooping will unblock the VLAN interface.
In rc4 I already experienced 2 complete device lockups. Happens after a few days uptime. The device did not auto-reboot nor did the watchdog generate an autosupout.rif nor any log entry. I thought that times are long behind me, but in this recent RC the instability has catched up again.
Please send us supout.rif files to the support@mikrotik.com
Simply configuring IPv6, queues, and dst/target interfaces, limitations work for us, so there must be some specific settings we are missing.
That’s it. Nothing complex. When logging onto the device using Winbox MAC and pinging some random IPv6 internet host all incoming packets are new and invalid according to the log.
Most of us are more interested in when the stable v7 is released (with the newer cake/fq_codel supporting linux kernels), because honestly, cake is what everybody needs (now) and is waiting for.
And, not unimportant, many other big brands are already using it. So, users are fleeing towards those other brands because of that.
Not only v7 is not stable, CAKE is not implemented fully at the moment. (When specifying a queue, you can’t tell it it will be ingress or egress and defaults to egress).
tc qdisc ... cake
...
[ mpu N ]
[ ingress | egress* ] <----------
(* marks defaults)