Good afternoon.
Tell me please.
There are 6 mikrotik devices on the network. WAN RB3011 on it raised IPV6 DHCP server. After the fall of electricity, all 6 devices are started, but the addresses (IPv6) are received from RB3011 each time in different ways. How to make it hard to bind an IPV6 address to a specific device, like the usual DHCP IPv4. Make Static on the DHCP IPV6 server - holds the address only until the restart or before Release IPV6 from the upstream provider
Hi
You can define static mapping under /ipv6 dhcp-server binding.
Hi
I told, this all works before rebooting all devices at the same time due to a drop in electricity. If RB3011 just reboots, there are no problems, if all but the RB3011 are rebooted, there are no problems either. Problem with simultaneous reboot.
Looks like dhcpv6 leases are not persisted like v4. To be confirmed by Mikrotik?!?
What you could do, is switch to stateless configuration with nd, where the clients will create ipv6 based on their mac. Since that mac is fixed, it will result in fixed ipv6. At least for the iterface part.
If you get a different network prefix, from provider, that’s another matter entirely.
After a night of experiments it was clarified. If I do not take DHCPv6 from the provider by the client, and I register everything with pens (routes, addresses, etc) then everything works, static addresses remain. As soon as I take everything through DHCPv6, not one address remains.
We need to wait for a solution, so that the received pool from the provider can be made static. In the meantime, either write down an address or suffer.