hi dicko, I carried instructions in that post adapting to ip of my new environment, took my raspberry pi to new office, plugged in and exactly the same thing happened; there was no communication at all. the only way I could communicate was to plug hdmi and usb keyboard into pi and log in that way.
I also carried out the advice of the link poster and did a backup of interfaces file, I renamed my backup, took to original location. connected and all functioning ok again.
I ran ifconfig and this is the result:
lo Link encap:LocalLoopback
inet addr:127.0.0.1 Mask 255.0.0.0
inet6 addr: :: 1/128 Scope:Host
UP LOOPBACK RUNNING MTU: 65536 Metric:1
RX Packets:180 errors:0 dropped:0 overruns:0 frame:0
TX Packets:180 errors:0 dropped:0 overruns:0 frame:0
collisions:0 txqueuelen:0
RX bytes:12236 (12.0 kib) TX bytes:12236 (12.0 kib)
I know I don't know what i'm doing but what's is I don't know what i'm doing wrong.