IPv6 DNS not advertising ?

RouterOS Beginner Basics
1

My ISP gives IPV6 dns.
I am using 6.5

ip dns print
servers: 193.92.150.3,193.92.3.11
dynamic-servers: 2a02:2148:99:4444::4444,2a02:2148:99:4000::4000
allow-remote-requests: yes
max-udp-packet-size: 4096
query-server-timeout: 2s
query-total-timeout: 10s
cache-size: 2048KiB
cache-max-ttl: 1w
cache-used: 639KiB

I get ipv6 ip at computers

I have setup ND like that


[admin@MikroTik] > ipv6 nd print
Flags: X - disabled, I - invalid, * - default
0 * interface=all ra-interval=3m20s-10m ra-delay=3s mtu=unspecified
reachable-time=unspecified retransmit-interval=unspecified
ra-lifetime=30m hop-limit=unspecified advertise-mac-address=yes
advertise-dns=yes managed-address-configuration=yes
other-configuration=no

1 interface=ether2-master-local ra-interval=3m20s-10m ra-delay=3s
mtu=unspecified reachable-time=1m40s
retransmit-interval=unspecified ra-lifetime=none
hop-limit=unspecified advertise-mac-address=yes advertise-dns=yes
managed-address-configuration=yes other-configuration=no

However when ISP changes ipv6 ip i loose connectivy. I have to renew my adapter from windows..


Wireshark for 134 type I get no dns

2

It has nothing to do with DNS not being advertised. If your ISP assigns dynamic IPv6 prefixes over DHCPv6-PD and it changed when your client(s) are still connected to the router, they will lose connectivity because the stale IPv6 address(es) the client get from the router are not marked depreciated.

3

this is part of the problem.Also i see no dns advertisment