activar fuente monoespaciada

192.168.11.0 /24
  |
  +---------- 192.168.11.0/26
                     |
                     +------ 192.168.11.0/28 (P2Ps)
                     |              |
                                    +--- 192.168.11.0/30  (P2p-1)   
                     |              +--- 192.168.11.4/30  (P2p-2)
                                    +--- 192.168.11.8/30  (P2p-3)
                     |              +--- 192.168.11.12/30 (libre) 
                     
                     +------ 192.168.11.16/28 (n1-n6) 
                     |
                     +------ 192.168.11.32/27 (libre)
  |
  +---------- 192.168.11.64/26 (Red local de router n3)
  |
  +---------- 192.168.11.128/26 (red local de router n2)
  |
  +---------- 192.168.11.192/26 (libre)
