tcpdump: listening on eth2.2029.1222, link-type EN10MB (Ethernet), capture size 262144 bytes
11:32:15.850398 IP (tos 0x10, ttl 128, id 0, offset 0, flags [none], proto UDP (17), length 328)
    0.0.0.0.67 > 255.255.255.255.68: [udp sum ok] BOOTP/DHCP, Reply, length 300, xid 0xa37d6855, Flags [Broadcast] (0x8000)
          Client-Ethernet-Address b0:be:76:00:1b:6b
          Vendor-rfc1048 Extensions
            Magic Cookie 0x63825363
            DHCP-Message Option 53, length 1: NACK
            MSG Option 56, length 20: "Session dosn't exist"
11:32:19.850026 IP (tos 0x0, ttl 64, id 65379, offset 0, flags [none], proto UDP (17), length 576)
    0.0.0.0.68 > 255.255.255.255.67: [udp sum ok] BOOTP/DHCP, Request from b0:be:76:00:1b:6b, length 548, xid 0xd2af1d79, Flags [Broadcast] (0x8000)
          Client-Ethernet-Address b0:be:76:00:1b:6b
          Vendor-rfc1048 Extensions
            Magic Cookie 0x63825363
            DHCP-Message Option 53, length 1: Discover
            MSZ Option 57, length 2: 1024
            Client-ID Option 61, length 7: ether b0:be:76:00:1b:6b
            Hostname Option 12, length 9: "TL-WR841N"
            Vendor-Class Option 60, length 8: "MSFT 5.0"
            Parameter-Request Option 55, length 11:
              Subnet-Mask, Default-Gateway, Domain-Name-Server, Domain-Name
              Vendor-Option, Netbios-Name-Server, Netbios-Node, Netbios-Scope
              Static-Route, Classless-Static-Route, Classless-Static-Route-Microsoft
11:32:19.900499 IP (tos 0x10, ttl 128, id 0, offset 0, flags [none], proto UDP (17), length 328)
    194.12.64.6.67 > 255.255.255.255.68: [udp sum ok] BOOTP/DHCP, Reply, length 300, xid 0xd2af1d79, Flags [Broadcast] (0x8000)
          Your-IP 194.12.75.36
          Client-Ethernet-Address b0:be:76:00:1b:6b
          Vendor-rfc1048 Extensions
            Magic Cookie 0x63825363
            DHCP-Message Option 53, length 1: Offer
            Server-ID Option 54, length 4: 194.12.64.6
            Lease-Time Option 51, length 4: 600
            RN Option 58, length 4: 300
            RB Option 59, length 4: 525
            Default-Gateway Option 3, length 4: 194.12.64.6
            Subnet-Mask Option 1, length 4: 255.255.224.0
            Domain-Name-Server Option 6, length 8: 91.203.164.21,91.203.164.17
11:32:20.850028 IP (tos 0x0, ttl 64, id 2439, offset 0, flags [none], proto UDP (17), length 576)
    0.0.0.0.68 > 255.255.255.255.67: [udp sum ok] BOOTP/DHCP, Request from b0:be:76:00:1b:6b, length 548, xid 0xd2af1d79, Flags [Broadcast] (0x8000)
          Client-Ethernet-Address b0:be:76:00:1b:6b
          Vendor-rfc1048 Extensions
            Magic Cookie 0x63825363
            DHCP-Message Option 53, length 1: Request
            MSZ Option 57, length 2: 1024
            Client-ID Option 61, length 7: ether b0:be:76:00:1b:6b
            Hostname Option 12, length 9: "TL-WR841N"
            Vendor-Class Option 60, length 8: "MSFT 5.0"
            Requested-IP Option 50, length 4: 194.12.75.36
            Server-ID Option 54, length 4: 194.12.64.6
            Parameter-Request Option 55, length 11:
              Subnet-Mask, Default-Gateway, Domain-Name-Server, Domain-Name
              Vendor-Option, Netbios-Name-Server, Netbios-Node, Netbios-Scope
              Static-Route, Classless-Static-Route, Classless-Static-Route-Microsoft
11:32:20.850438 IP (tos 0x10, ttl 128, id 0, offset 0, flags [none], proto UDP (17), length 328)
    194.12.64.6.67 > 255.255.255.255.68: [udp sum ok] BOOTP/DHCP, Reply, length 300, xid 0xd2af1d79, Flags [Broadcast] (0x8000)
          Your-IP 194.12.75.36
          Client-Ethernet-Address b0:be:76:00:1b:6b
          Vendor-rfc1048 Extensions
            Magic Cookie 0x63825363
            DHCP-Message Option 53, length 1: ACK
            Server-ID Option 54, length 4: 194.12.64.6
            Lease-Time Option 51, length 4: 600
            RN Option 58, length 4: 300
            RB Option 59, length 4: 525
            Default-Gateway Option 3, length 4: 194.12.64.6
            Subnet-Mask Option 1, length 4: 255.255.224.0
            Domain-Name-Server Option 6, length 8: 91.203.164.21,91.203.164.17
11:32:20.850680 ARP, Ethernet (len 6), IPv4 (len 4), Request who-has 194.12.75.36 tell 194.12.75.36, length 46