Apr 29 08:13:42 tstack-centos5 dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 5 (xid=0xd16b79d)
word  62:64                                                                ^^                                                     to
 key  62:64                                                                ^^                                                     to
ipv4  65:80                                                                   ^-------------^                                     255.255.255.255
 val  65:80                                                                   ^-------------^                                     255.255.255.255
pair  62:80                                                                ^----------------^                                     to 255.255.255.255
word  81:85                                                                                   ^--^                                port
 key  81:85                                                                                   ^--^                                port
 num  86:88                                                                                        ^^                             67
 val  86:88                                                                                        ^^                             67
pair  81:88                                                                                   ^-----^                             port 67
word  89:97                                                                                           ^------^                    interval
 key  89:97                                                                                           ^------^                    interval
 num  98:99                                                                                                    ^                  5
 val  98:99                                                                                                    ^                  5
pair  89:99                                                                                           ^--------^                  interval 5
 key 101:101                                                                                                     ^                
 key 101:104                                                                                                      ^-^             xid
 hex 105:114                                                                                                          ^-------^   0xd16b79d
 val 105:114                                                                                                          ^-------^   0xd16b79d
pair 101:114                                                                                                      ^-----------^   xid=0xd16b79d
 grp 101:114                                                                                                      ^-----------^   xid=0xd16b79d
 val 101:114                                                                                                      ^-----------^   xid=0xd16b79d
pair 101:114                                                                                                      ^-----------^   xid=0xd16b79d
msg         :DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 5 (xid=0xd16b79d)
format      :DHCPDISCOVER on eth0 to # port # interval # (#)
{
    "to": "255.255.255.255",
    "port": 67,
    "interval": 5,
    "col_0": [
        {
            "xid": "0xd16b79d"
        }
    ]
}