What do I need to delete in order to kill the network connection in Windows 7?

Previously, if I delete the default gateway (0.0.0.0), it ended internet connection.

I don’t know what changed, but now it does not.

I have tested it with successful pings and loads to various sites.

What do I need to delete in order to kill the connection?

Here is my route table:

IPv4 Route Table
===========================================================================
Active Routes:
Network Destination        Netmask          Gateway       Interface  Metric
          0.0.0.0          0.0.0.0      192.168.1.1    192.168.1.221     25
        127.0.0.0        255.0.0.0         On-link         127.0.0.1    306
        127.0.0.1  255.255.255.255         On-link         127.0.0.1    306
  127.255.255.255  255.255.255.255         On-link         127.0.0.1    306
      192.168.1.0    255.255.255.0         On-link     192.168.1.221    281
    192.168.1.221  255.255.255.255         On-link     192.168.1.221    281
    192.168.1.255  255.255.255.255         On-link     192.168.1.221    281
        224.0.0.0        240.0.0.0         On-link         127.0.0.1    306
        224.0.0.0        240.0.0.0         On-link     192.168.1.221    281
  255.255.255.255  255.255.255.255         On-link         127.0.0.1    306
  255.255.255.255  255.255.255.255         On-link     192.168.1.221    281
===========================================================================