Comment 7 for bug 2015411

A less drastic work-around than recommissioning all nodes (or rolling back to 3.2) is the following db update:

  sudo su - maas -c "psql maasdb -c 'update maasserver_node set gateway_link_ipv4_id=null where system_id='\''cpg88q'\'';' "

Where cpg88q is the system id of the node where the restore-networking-configuration command fails.