Destination    Gateway        Genmask      Flags    Metrics    Ref    Use    Iface
Default        192.168.42.129 0.0.0.0      UG       0          0      0      usb0
Link-local     *              255.255.0.0  U        1000       0      0      usb0
192.168.42.0   *              255.255.255.0 U        1          0      0      usb0

Ifconfig usb0
Usb0 Link encap:Ethernet HWaddr fe......
Inet addr: 192.168.42.255 Bcast: 192.168.42.255 Mask: 255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1