For once I am posting without something being currently broken, just a general "best practices" question.  Most of my dockers were set up before there was the option to have static IPs set at the container level.  Never bothered to understand it, but its apparently recommended for the AdGuard Docker so I may as well figure it out.

 

In the past I have had Unifi deal with assigning Static IPs for actual devices like the unraid server itself.  If I am going to start using the containers, do I need to be sure I am using IPs outside Unifi's DHCP range, or does it not matter?  If the container has its own, can the DHCP process assign the same one to something else? 

 

thanks

 

 

Yes, its best to have a range of IPs for dockers that is outside of the Unifi's DHCP range.

You can customize the docker network (by default named eth0/br0) and have it use IPs in the desired range (instead of the whole subnet as by default)

 

FYI: Docker assigns containers IPs using a self-contained IPAM which does not coordinate with any external system like DHCP servers, etc. Docker does not attempt to check to see if the IP has been allocated and just picks the next available number.