option wpad code 252 = text;
option wpad "http://192.168.250.254/proxy.pac\n";

#                          Firmware: Build 3.00.B020
enable dhcp_relay
config dhcp_relay hops 4 time 0
config dhcp_relay option_82 state enable
config dhcp_relay option_82 check disable
config dhcp_relay option_82 policy keep
config dhcp_relay option_82 remote_id user_define 5C-D9-98-CC-C2-40
config dhcp_relay option_60 state disable
config dhcp_relay option_61 state disable
config dhcp_relay option_60 default mode drop
config dhcp_relay option_61 default drop
config dhcp_relay add vlanid 10 192.168.250.254

10:52:07.910189 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto UDP (17), length 362) 192.168.250.254.67 > 192.168.220.4.68: BOOTP/DHCP, Reply, length 334, hops 1, xid 0x686f27b, Flags [Broadcast]
          Client-IP 192.168.220.4
          Gateway-IP 192.168.223.254
          Client-Ethernet-Address e8:11:32:73:64:fc
          sname "hotels"
          Vendor-rfc1048 Extensions
            Magic Cookie 0x63825363
            DHCP-Message Option 53, length 1: ACK
            Server-ID Option 54, length 4: 192.168.250.254
            Subnet-Mask Option 1, length 4: 255.255.252.0
            Default-Gateway Option 3, length 4: 192.168.223.254
            Domain-Name-Server Option 6, length 4: 192.168.250.254
            T252 Option 252, length 33: 104.116.116.112.58.47.47.49.57.50.46.49.54.56.46.50.53.48.46.50.53.52.47.112.114.111.120.121.46.112.97.99.10
            Agent-Information Option 82, length 29:
              Circuit-ID SubOption 1, length 6: ^@^D^@^J^@^C
              Unknown SubOption 2, length 19:
                0x0000:  0111 3543 2d44 392d 3938 2d43 432d 4332
                0x0010:  2d34 30

No.     Time           Source                Destination           Protocol Length Info
      2 0.103181000    192.168.223.254       192.168.221.232       DHCP     347    DHCP ACK      - Transaction ID 0x8ed6288

Frame 2: 347 bytes on wire (2776 bits), 347 bytes captured (2776 bits)
    Arrival Time: Nov  8, 2012 15:28:53.876755000 Russian Standard Time
    Epoch Time: 1352374133.876755000 seconds
    [Time delta from previous captured frame: 0.103181000 seconds]
    [Time delta from previous displayed frame: 0.103181000 seconds]
    [Time since reference or first frame: 0.103181000 seconds]
    Frame Number: 2
    Frame Length: 347 bytes (2776 bits)
    Capture Length: 347 bytes (2776 bits)
    [Frame is marked: False]
    [Frame is ignored: False]
    [Protocols in frame: eth:ip:udp:bootp]
    [Coloring Rule Name: UDP]
    [Coloring Rule String: udp]
Ethernet II, Src: D-Link_cc:c2:40 (5c:d9:98:cc:c2:40), Dst: CompalIn_a7:49:1f (88:ae:1d:a7:49:1f)
    Destination: CompalIn_a7:49:1f (88:ae:1d:a7:49:1f)
        Address: CompalIn_a7:49:1f (88:ae:1d:a7:49:1f)
        .... ...0 .... .... .... .... = IG bit: Individual address (unicast)
        .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
    Source: D-Link_cc:c2:40 (5c:d9:98:cc:c2:40)
        Address: D-Link_cc:c2:40 (5c:d9:98:cc:c2:40)
        .... ...0 .... .... .... .... = IG bit: Individual address (unicast)
        .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
    Type: IP (0x0800)
Internet Protocol Version 4, Src: 192.168.223.254 (192.168.223.254), Dst: 192.168.221.232 (192.168.221.232)
    Version: 4
    Header length: 20 bytes
    Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00: Not-ECT (Not ECN-Capable Transport))
        0000 00.. = Differentiated Services Codepoint: Default (0x00)
        .... ..00 = Explicit Congestion Notification: Not-ECT (Not ECN-Capable Transport) (0x00)
    Total Length: 333
    Identification: 0x6aa0 (27296)
    Flags: 0x02 (Don't Fragment)
        0... .... = Reserved bit: Not set
        .1.. .... = Don't fragment: Set
        ..0. .... = More fragments: Not set
    Fragment offset: 0
    Time to live: 30
    Protocol: UDP (17)
    Header checksum: 0xb1c7 [correct]
        [Good: True]
        [Bad: False]
    Source: 192.168.223.254 (192.168.223.254)
    Destination: 192.168.221.232 (192.168.221.232)
User Datagram Protocol, Src Port: bootps (67), Dst Port: bootpc (68)
    Source port: bootps (67)
    Destination port: bootpc (68)
    Length: 313
    Checksum: 0x738c [validation disabled]
        [Good Checksum: False]
        [Bad Checksum: False]
Bootstrap Protocol
    Message type: Boot Reply (2)
    Hardware type: Ethernet
    Hardware address length: 6
    Hops: 2
    Transaction ID: 0x08ed6288
    Seconds elapsed: 0
    Bootp flags: 0x0000 (Unicast)
        0... .... .... .... = Broadcast flag: Unicast
        .000 0000 0000 0000 = Reserved flags: 0x0000
    Client IP address: 0.0.0.0 (0.0.0.0)
    Your (client) IP address: 192.168.221.232 (192.168.221.232)
    Next server IP address: 0.0.0.0 (0.0.0.0)
    Relay agent IP address: 192.168.223.254 (192.168.223.254)
    Client MAC address: CompalIn_a7:49:1f (88:ae:1d:a7:49:1f)
    Client hardware address padding: 00000000000000000000
    Server host name: hotels
    Boot file name not given
    Magic cookie: DHCP
    Option: (t=53,l=1) DHCP Message Type = DHCP ACK
        Option: (53) DHCP Message Type
        Length: 1
        Value: 05
    Option: (t=54,l=4) DHCP Server Identifier = 192.168.250.254
        Option: (54) DHCP Server Identifier
        Length: 4
        Value: c0a8fafe
    Option: (t=51,l=4) IP Address Lease Time = 6 hours
        Option: (51) IP Address Lease Time
        Length: 4
        Value: 00005460
    Option: (t=1,l=4) Subnet Mask = 255.255.252.0
        Option: (1) Subnet Mask
        Length: 4
        Value: fffffc00
    Option: (t=3,l=4) Router = 192.168.223.254
        Option: (3) Router
        Length: 4
        Value: c0a8dffe
    Option: (t=6,l=4) Domain Name Server = 192.168.250.254
        Option: (6) Domain Name Server
        Length: 4
        Value: c0a8fafe
    End Option
    Padding