My Mikrotik 850Gx4 log is flooded with “pool6 refused acquire: bad preferred prefix! (1)”.
It make impossible to view any usefully log entry, as the error repeat itself every second.
Received addresses are /64 prefix.
This is a dhcpv6-pd server or client?
post: an export of the dhcpv6 - pd server / client and post an export of the ipv6 pools.
Hello!
/ipv6 dhcp-server print
Flags: D - dynamic, X - disabled, I - invalid
# NAME INTERFACE ADDRESS-POOL PREFERENCE LEASE-TIME
0 DHCP_LAN_ipv6 bridge static-only 255 3d
[costel@MikroTik_850Gx4] > /ipv6 pool print
Flags: D - dynamic
# NAME PREFIX PREFIX-LENGTH EXPIRES-AFTER
0 D ipv6pool 2a02:2f0c:c20c:f500::/56 64
/ipv6 dhcp-server binding print
Flags: I - invalid, X - disabled, R - radius, D - dynamic
# ADDRESS DUID SERVER STATUS
I observed that ISP prefix is different from pool prefix (56 vs 64), but both are acquired from ISP. By delete bindings error is gone.
I am new to ipv6 and it seems to me that DHCPv6 server is somewhat limited on mikrotik, compared to ipv4.
How can I make static leases on ipv6 like on ipv4 ?
Sorry, I forgot DHCP client:
/ipv6 dhcp-client print
Flags: D - dynamic, X - disabled, I - invalid
# INTERFACE STATUS REQUEST PREFIX ADDRESS
0 pppoe-digi bound address 2a02:2f0c:c20c:f500::/56, never 2a02:2f0c:c2ff:ffff::4f77:ddda, never
prefix