Here is my version info:
BIOS Revision: 3.0.0
iDRAC6 Configuration Utility: 1.59
IDRAC6 Firmware Revision: 1.70.21
Lifecycle Controller version: 126.96.36.1991
Primary Backplane Firmware Revision: 1.07
I've just reset iDRAC6 to factory defaults, then change: IPv4's IP+gateway+DNS(188.8.131.52), domain and host names (to existing name pointing to iDRAC's IP), and LAN user's password - nothing else was changed. Reboot several times using KVM's Ctrl-Alt-Del - iDRAC doesn't reply to ping.