Request Help：
I have a model rb450gx4 device running ros6.48.6, I set up ipv4 and ipv6 dns servers in “/ip dns”, and then I set up the announced dns servers in “/ipv6 nd”, but my client occasionally has lost ipv6 dns service event from time to time.
Request Help：
I have a model rb450gx4 device running ros6.48.6, I set up ipv4 and ipv6 dns servers in “/ip dns”, and then I set up the announced dns servers in “/ipv6 nd”, but my client occasionally has lost ipv6 dns service event from time to time.