Since the last 2 month I’m trying to fix our DNS resolving bug.
There is a domain and some of its subdomains sometimes resolve fine, sometimes resolve to 0.0.0.0 as unknown type with N flag.
- I changed the router to a TP-Link one and the problem was gone.
- While using bitdefender VPN the problem was gone.
- The main domain always works.
- Certain subdomains belonging to this domain don’t work most of the time.
- Even with all firewall and nat rules disabled.
Didn’t anyone experience such irregular DNS resolving problems?