
When dhcpcd instead of networkd is used, the network-online.target behaved the same as network.target, resulting in broken services that need a working network connectivity when being started. This commit makes dhcpcd wait for a lease and makes it wanted by network-online.target. In turn, network-online.target is now wanted by multi-user.target, so it will be activated at every boot.
*** NixOS *** NixOS is a Linux distribution based on the purely functional package management system Nix. More information can be found at http://nixos.org/nixos and in the manual in doc/manual.