I have a DSL service (Covad) which requires me to set the
subnet mask to a subnet having only 5 hosts:
gateway : 188.8.131.52
subnet mask: 184.108.40.206
IP's to use: 152.68.6.<250-254>
Unfortunately Linux does not let me set the subnet mask to
the above value. Solaris and Windows 98 do, and it works
fine on those OS's.
Please try a subnet mask of 255.255.255.248
220.127.116.11 is not a valid subnet mask.