In the absence of any further responses -- thanx again for those so far -- I tried emerging Openrc with 'newnet' & 'netifrc' (separately), but (after reboot) neither made any difference : still no auto I/net. Finally, I tried brute force -- 'rc-update add dhcpcd' -- , which worked.
So there's some mysterious difference between the behaviour of Openrc on the 2 machines : on the Netbook, it starts DHCPCD without any flags, whereas on the Desktop, neither recommended flag causes it to start. AFAICS both machines have the same config settings in relevant files, both have upto-date stable versions of pkgs, both have similar kernels. Any further suggestions whence the difference might arise are very welcome. -- ========================,,============================================ SUPPORT ___________//___, Philip Webb ELECTRIC /] [] [] [] [] []| Cities Centre, University of Toronto TRANSIT `-O----------O---' purslowatchassdotutorontodotca