This object contains the type of 'sticky' entry created when
accessing this LSNAT Virtual server.
- `none', indicates no LSNAT sticky entries will be created.
- `sip', indicates that LSNAT sticky entries will be created
based on the source IP address.
- `sipDipDport', indicates that LSNAT sticky entries will be
created based on source IP address, destination IP address
and the destination port.