^\w{3} [ :0-9]{11} [._[:alnum:]-]+ dhclient(-2.2.x)?: No working leases in persistent database( - sleeping)?\.$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ dhclient(-2.2.x)?: Sleeping\.$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ dhclient(-2.2.x)?: No DHCPOFFERS received\.$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ dhclient(-2.2.x)?: receive_packet failed on eth[0-9]: Network is down$