---
title: "Known Limitations"
canonical: "https://docs.infoblox.com/space/DeploymentGuideHowtoDeployandConfigureBloxOneNTPService/664341506/Known%20Limitations"
format: markdown
---
The current limitations that exist for the BloxOne NTP service are listed below:

- IPv6, CNIOS/NIOS, and Bare metal deployments are not supported.
- Only MD5 certificates are supported for Authentication purposes.
- NTP Access Control lists are not currently configurable.

Due to the nature of cloud platforms, these limitations may change with future BloxOne releases. For more information on updates, and limitations to the BloxOne NTP service please see the Infoblox documentation portal at <u>[docs.infoblox.com](http://docs.infoblox.com)</u>.