Apr 29 22:32:26 tstack-centos5 dhclient: DHCPREQUEST on eth0 to 10.1.10.1 port 67 (xid=0xd16b79d)
 key  41:41                                          ^                                                          
 sym  41:52                                           ^---------^                                               DHCPREQUEST
pair  41:52                                           ^---------^                                               DHCPREQUEST
 key  56:56                                                         ^                                           
 sym  56:60                                                          ^--^                                       eth0
pair  56:60                                                          ^--^                                       eth0
 key  64:64                                                                 ^                                   
ipv4  64:73                                                                  ^-------^                          10.1.10.1
pair  64:73                                                                  ^-------^                          10.1.10.1
 key  79:79                                                                                ^                    
 num  79:81                                                                                 ^^                  67
pair  79:81                                                                                 ^^                  67
 key  83:83                                                                                    ^                
 key  83:86                                                                                     ^-^             xid
 hex  87:96                                                                                         ^-------^   0xd16b79d
 val  87:96                                                                                         ^-------^   0xd16b79d
pair  83:96                                                                                     ^-----------^   xid=0xd16b79d
 grp  83:96                                                                                     ^-----------^   xid=0xd16b79d
pair  83:96                                                                                     ^-----------^   xid=0xd16b79d
msg         :DHCPREQUEST on eth0 to 10.1.10.1 port 67 (xid=0xd16b79d)
format      :# on # to # port # (#)
{
    "col_0": "DHCPREQUEST",
    "col_1": "eth0",
    "col_2": "10.1.10.1",
    "col_3": 67,
    "col_4": [
        {
            "xid": "0xd16b79d"
        }
    ]
}