Some example with Wireshark output visible too.
Wireshark running on notebook running "dhcpd-test eth0".
bgmac with debugging running on Linksys E900

What bgmac received doesn't really look like what was sent (registered by 
Wireshark).

0000   ff ff ff ff ff ff e8 11 32 cd e2 be 08 00 45 10  ........2.....E.
0010   01 5c 00 00 40 00 40 11 39 82 00 00 00 00 ff ff  .\..@[email protected].......
0020   ff ff 00 44 00 43 01 48 77 e4 01 01 06 00 bd 1c  ...D.C.Hw.......
0030   91 23 00 00 00 00 00 00 00 00 00 00 00 00 00 00  .#..............
0040   00 00 00 00 00 00 e8 11 32 cd e2 be 00 00 00 00  ........2.......
0050   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
0060   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
0070   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
0080   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
0090   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00a0   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00b0   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00c0   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00d0   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00e0   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00f0   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
0100   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
0110   00 00 00 00 00 00 63 82 53 63 35 01 01 3d 07 01  ......c.Sc5..=..
0120   e8 11 32 cd e2 be 3c 0c 64 68 63 70 63 64 20 33  ..2...<.dhcpcd 3
0130   2e 32 2e 33 51 1a 01 00 00 6c 69 6e 75 78 2d 73  .2.3Q....linux-s
0140   61 6d 73 75 6e 67 37 30 30 67 37 61 2e 6c 61 6e  amsung700g7a.lan
0150   37 17 3a 3b 01 1c 79 21 03 0c 77 0f 06 28 29 2a  7.:;..y!..w..()*
0160   1a 11 78 09 07 2c 2d 2e 2f ff                    ..x..,-./.
                                                                        0    1  
    2  3  4  5  6  7  8  9  10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 
27  28 29        30 31 32 33 34 35  36 37 38 39 40 41  42 43  44
                                                                        len  
flags  rest                                                                     
      alignment    MAC dest           MAC src            type   payload
[  293.572000] bgmac: [DBG][bgmac_dma_rx_read:328]      [RX] len:148    94   00 
    09 00 15 55 55 57 75 55 57 11 55 51 75 15 55 71 55 77 55 55 55 55 55 1D 55 
75  55 15        FF FF 1F C2 1E 00  00 15 00 40 10 89  00 F0  FF 40 10 78 1E 06 
1B 03 00 00 00 00 00 00 00 E0 D1 B2 00 00 00 00 0

0000   ff ff ff ff ff ff e8 11 32 cd e2 be 08 00 45 10  ........2.....E.
0010   01 5c 00 00 40 00 40 11 39 82 00 00 00 00 ff ff  .\..@[email protected].......
0020   ff ff 00 44 00 43 01 48 77 e1 01 01 06 00 bd 1c  ...D.C.Hw.......
0030   91 23 00 03 00 00 00 00 00 00 00 00 00 00 00 00  .#..............
0040   00 00 00 00 00 00 e8 11 32 cd e2 be 00 00 00 00  ........2.......
0050   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
0060   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
0070   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
0080   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
0090   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00a0   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00b0   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00c0   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00d0   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00e0   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00f0   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
0100   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
0110   00 00 00 00 00 00 63 82 53 63 35 01 01 3d 07 01  ......c.Sc5..=..
0120   e8 11 32 cd e2 be 3c 0c 64 68 63 70 63 64 20 33  ..2...<.dhcpcd 3
0130   2e 32 2e 33 51 1a 01 00 00 6c 69 6e 75 78 2d 73  .2.3Q....linux-s
0140   61 6d 73 75 6e 67 37 30 30 67 37 61 2e 6c 61 6e  amsung700g7a.lan
0150   37 17 3a 3b 01 1c 79 21 03 0c 77 0f 06 28 29 2a  7.:;..y!..w..()*
0160   1a 11 78 09 07 2c 2d 2e 2f ff                    ..x..,-./.
                                                                        0    1  
    2  3  4  5  6  7  8  9  10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 
27  28 29        30 31 32 33 34 35  36 37 38 39 40 41  42 43  44
                                                                        len  
flags  rest                                                                     
      alignment    MAC dest           MAC src            type   payload
[  296.572000] bgmac: [DBG][bgmac_dma_rx_read:328]      [RX] len:148    94   00 
    09 00 55 55 15 11 53 55 5D 75 15 55 55 55 55 55 57 51 55 11 55 55 55 55 55 
55  55 D5        FF FF 18 C3 1E 00  08 14 0C 40 10 83  00 F0  FF 40 13 74 11 00 
1C 02 00 00 00 00 00 00 00 E0 D2 BE 00 00 00 00 0
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