NET-1603: Manage DNS NM changes

[yabinma]

Describe your changes

Provide Issue ticket number if applicable/not in title

Provide testing steps

Checklist before requesting a review

• [ ] My changes affect only 10 files or less.
• [ ] I have performed a self-review of my code and tested it.
• [ ] If it is a new feature, I have added thorough tests, my code is <= 1450 lines.
• [ ] If it is a bugfix, my code is <= 200 lines.
• [ ] My functions are <= 80 lines.
• [ ] I have had my code reviewed by a peer.
• [ ] My unit tests pass locally.
• [ ] Netmaker is awesome.