On some device models, files which should survive a reboot must be placed to a flash/ directory (from command line, you just use the flash/ prefix of the file name).

Tested, above answer is exactly correct.

I have several model of Mikrotik rpoduct, and I found there is a issue that the file store on Mikrotik routers will automatically be erased after a general reboot. To reproduce this issue, upload an arbitrary file then press reboot to reboot the device, check whether the file just uploaded is there....

RB4011iGS+RM/5HacQ2HnD has 4 cores with 1.4GHz CPU, 1GB RAM and 512M HDD. Unfortunately , the MetaROUTER feature is NOT supported on such high performance hardware. Typically common usage only consume less than 5% performance. I would like to have more flexibles and hereby request to enable MetaRout...

+1, I need this as well. Besides 'PATCH', I am also requesting 'DEL' method.

I am using both IPv4 and IPv6, TaZmen Sniffer Protocol(TZSP) is working perfectly with IPv4 by setting mangle rule in Firewall to forward TZSP to monitor computer, but this option is not available with IPv6. Would you or someone know how to perform TZSP with IPv6? If Mikrotik is not supporting this ...

As the title, both OVPN server and OVPN client are working fine with IPv4 address. But I have no idea to get them talking with each other over IPv6 address, is that saying OVPN on Mikrotik devices today does not work thru IPv6??? My network is running normally, and IPIPv6 Tunnel, GRE6 Tunnel and EoI...

You should put a new rule before your "NAT" rule to disable NAT for ipsec communications.

Now it's 2020. Does Mikrotik have any plan on this feature? without this, I have to run a separate DHCP server in my LAN to provide required feature. Really pls Mikrotik to consider this requirement.