Here is the solution (if you know the MAC of the camera):
- reset the IQ511 by pressing and continuing to hold reset while powering the camera, hold until the red light changes to green (about 8 secs)
- on a computer on the same segment, set a static ARP record for the camera using the MAC on the back (sudo arp -s 192.168.1.60 00501a01e634)
- ping that IP (ping 192.168.1.60), the camera will assign itself this IP, and it will begin to respond to ping
- log in via telnet (telnet 192.168.1.60), enter anything as username
- change to admin (SET PRIVILEGE) and enter the default password
- turn on DHCP (DEFINE SERVER DHCP ENABLE)
- save the settings (SAVE SERVER)
- reboot camera (INIT DELAY 0)
- remove the ARP table entry when confirmed working
It will grab an DHCP assignment now.
I still think these are some of the best cameras out there for MJPEG, low power usage (and 12-24v terminals), superb firmware features and customization, compact size.