MikroTik IPv6 DNS RDNSS
To activate on your MikroTik RouterOS device RDNSS, you must do the following.
Set the IPv6 DNS server.
/ip dns set server=2001:4860:4860::8888,2001:4860:4860::8844
Show the configuration
/ip dns print servers: 2001:4860:4860::8888,2001:4860:4860::8844 dynamic-servers: 77.109.128.2,213.144.129.20 allow-remote-requests: no max-udp-packet-size: 4096 query-server-timeout: 2s query-total-timeout: 10s cache-size: 2048KiB cache-max-ttl: 1w cache-used: 9KiB
Enable RDNSS
/ipv6 nd set [f] advertise-dns=yes
Show the IPv6 nd configuration
/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=no other-configuration=no
On Ubuntu/Debian linux distributions you can install rdnssd package which is capable of receiving advertised DNS address.
sudo apt-get install rdnssd
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