OnCommand System Manager version 2.0.2 is now available. It is highly recommended that all users upgrade to this version at your earliest opportunity. This latest version of System Manager addresses BURTs, code hardening, and modified vFiler editing to help ensure corruption-free network configuration. Click here for Software Download page
Network is still able to be configured at set-up, but yes, editing through the GUI afterwords has been depricated for now. Thanks for the understanding and patience. This will be resolved in the December release. If you are interested, there may be the ability to get access to a beta before then. Just let me know.
Also, for what it's worth the only reason I've advised customers to go in there is to setup DNS, as the standard setup process doesn't do it (yet?), and it's required for CIFS setup (despite the friendly, 'OK - no just go run CIFS setup' message at the end of the vFiler setup process). If we could modify that process to include DNS, this would be less of an issue.