Binary package “dhcpcd5” in ubuntu oneiric

RFC2131 compliant DHCP client with IPv4LL support

 dhcpcd is a one stop IPv4 network management daemon which includes
  * RFC2131 compliant DHCP client
  * IPv4LL (aka ZeroConf) support
  * ARP address conflict resolution
  * Link carrier detection
  * Wireless SSID profiles
  * ARP ping profiles