Examples:
    > route PRINT
    > route PRINT -4
    > route PRINT -6
    > route PRINT 157*          .... Only prints those matching 157*
    > route ADD 157.0.0.0 MASK 255.0.0.0  157.55.80.1 METRIC 3 IF 2
             destination^      ^mask      ^gateway     metric^    ^
                                                         Interface^
      If IF is not given, it tries to find the best interface for a give
      gateway.
    > route ADD 3ffe::/32 3ffe::1
    > route CHANGE 157.0.0.0 MASK 255.0.0.0 157.55.80.5 METRIC 2 IF 2
      CHANGE is used to modify gateway and/or metric only.
    > route DELETE 157.0.0.0
    > route DELETE 3ffe::/32