op=BOOTREPLY chaddr=D4:BE:D9:A5:FD:25 hops=0 xid=043C5A1F secs=0 flags=8000
  ciaddr=0.0.0.0 yiaddr=193.205.57.136 siaddr=192.84.143.131 giaddr=0.0.0.0 sname= file=pxelinux.0
  9 options:
     53 (DHCP Message Type): offer
     54 (Server Identifier): 192.84.143.31
     51 (IP Address Lease Time): 43200 (12 hours)
      1 (Subnet Mask): 255.255.255.0
      3 (Router Option): 193.205.57.254
      6 (Domain Name Server Option): 192.84.143.224, 192.84.143.31
     42 (Network Time Protocol Servers Option): 192.84.143.133
     44 (NetBIOS over TCP/IP Name Server Option): C0 54 8F 65 C0 54 8F 67
     15 (Domain Name): pd.infn.it