Here it is. DCC v2.82. DM 7020, router.
Image: pli-Flubber-The Sequel-dm7020-20060818-1502.nfi
DM connected to wireless router via regular ethernet cable.

DCC shows me settings:
Lappy IP: 192.168.0.10
DM IP: 192.168.0.11
Router IP:192.168.0.1
Connection type: router
Login: root
Password: dreambox

*****************************************
I went to DM's setup>expert setup>communication setup> and set:
IP: 192.168.0.11
Netmask: 255.255.255.0
Type: LAN
Nameserver: 192.168.0.1
Gateway: 192.168.0.1
Enable Network: ON
Port: 80
DHCP: OFF
*******************************************
RESULT:

Telnet: CONNECTED
FTP: NOT Connected(It says, DM login failed!)

Where's my mistake?

DCC shows me settings:
Lappy IP: 192.168.0.10
DM IP: 192.168.0.11
Router IP:192.168.1...should be 192.168.0.1
Connection type: router
Login: root
Password: dreambox

.