There are two ways of changing the IP address of a VDP appliance:
1- via vdp-configure web app
2- via VM console (the blue TUI inteface)
The correct one is the 1- option. If you will do it via 2- (like I did ) you'll end up with broken VDP. This method only changes settings on the network interface while it doesn't change avamar settings ... To fix it you'll have to manually edit IP address in the following files:
After this reboot the appliance and it should be back to normal.
Anyway, this SHOULD be written in "VDP Administration Guide" and/or noticed in some KB ... or even better ... after VDP is initially configured, changing IP address via VDP console (the blue TUI inteface) should be disabled ... hopefully VMware will fix this someday.
To complete markokobal post, here are the files which need to be modified on VDP 6.0