При попытке подключения:
ssh root@192.168.100.166
ssh: connect to host 192.168.100.166 port 22: No route to host
root@desktop:~$ ping 192.168.100.166
PING 192.168.100.166 (192.168.100.166) 56(84) bytes of data.
From 192.168.100.56 icmp_seq=1 Destination Host Unreachable
From 192.168.100.56 icmp_seq=2 Destination Host Unreachable
From 192.168.100.56 icmp_seq=3 Destination Host Unreachable
^C
--- 192.168.100.166 ping statistics ---
4 packets transmitted, 0 received, +3 errors, 100% packet loss, time 3059ms
pipe 4