Better yet, only run one DHCP server per network.
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and make sure all static IPs are known to that DHCP server.
Indeed!
Given that everything on my network gets their details via DHCP, I allocate the static ones within the range, generally speaking the pretty (memorable) numbers, but allocated by the DHCP server, so from the perspective of everything on the network, it's just another DHCP address, just that it never changes.