Just so you know, I think step (4) alone would have been enough. That is, regardless of DHCP, recommissioning a node under 1.9 should cause it to create "discovered" (aka "observed") addresses.
Do I assume correctly that this MAAS setup had been upgraded from 1.8? Upgraded nodes will not have "observed" IP addresses yet.
Just so you know, I think step (4) alone would have been enough. That is, regardless of DHCP, recommissioning a node under 1.9 should cause it to create "discovered" (aka "observed") addresses.
Do I assume correctly that this MAAS setup had been upgraded from 1.8? Upgraded nodes will not have "observed" IP addresses yet.