Hex dump of ping exchanges between an AWS host and (a) an old BSD 4.2 machine (b) a modern Linux box

## A ping exchange between the AWS box and the old BSD machine
## As captured on the Raspberry Pi via sudo tcpdump -i br0 -XX

## The old BSD machine uses the Ethernet address 08:00:6d:00:00:04
## The AWS host uses the Ethernet address 1e:64:9e:36:e4:5d

## Working as an Ethernet bridge, my RPi will **NOT** pass the ICMP reply.
## The aws_box cannot successfully ping old_bsd since the reply never makes it.

23:45:47.107712 IP aws_box > old_bsd: ICMP echo request, id 96, seq 3, length 64
        0x0000:  0800 6d00 0004 1e64 9e36 e45d 0800 4500  ..m....d.6.]..E.
        0x0010:  0054 bfbf 4000 4001 50e2 1400 0105 1400  .T..@.@.P.......
        0x0020:  0103 0800 315a 0060 0003 2bfd 4b60 0000  ....1Z.`..+.K`..
        0x0030:  0000 8f12 0100 0000 0000 1011 1213 1415  ................
        0x0040:  1617 1819 1a1b 1c1d 1e1f 2021 2223 2425  ...........!"#$%
        0x0050:  2627 2829 2a2b 2c2d 2e2f 3031 3233 3435  &'()*+,-./012345
        0x0060:  3637                                     67
23:45:47.115825 IP old_bsd > aws_box: ICMP echo reply, id 96, seq 3, length 64
        0x0000:  1e64 9e36 e45d 0800 6d00 0004 0800 4500  .d.6.]..m.....E.
        0x0010:  0054 1b24 0000 4001 357e 1400 0103 1400  .T.$..@.5~......
        0x0020:  0105 0000 395a 0060 0003 2bfd 4b60 0000  ....9Z.`..+.K`..
        0x0030:  0000 8f12 0100 0000 0000 1011 1213 1415  ................
        0x0040:  1617 1819 1a1b 1c1d 1e1f 2021 2223 2425  ...........!"#$%
        0x0050:  2627 2829 2a2b 2c2d 2e2f 3031 3233 3435  &'()*+,-./012345
        0x0060:  3637                                     67

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## A ping exchange between the AWS box and a modern Linux box
## As captured on the Raspberry Pi via sudo tcpdump -i br0 -XX

## The modern Linux box uses the Ethernet address 8c:c1:21:4d:78:16
## The AWS host uses the Ethernet address 1e:64:9e:36:e4:5d

## Working as an Ethernet bridge, my RPi **WILL** pass the ICMP reply
## The aws_box can successfully ping modern_linux.

23:51:01.684714 IP aws_box > modern_linux: ICMP echo request, id 100, seq 2, length 64
        0x0000:  8cc1 214d 7816 1e64 9e36 e45d 0800 4500  ..!Mx..d.6.]..E.
        0x0010:  0054 613b 4000 4001 af62 1400 0105 1400  .Ta;@.@..b......
        0x0020:  0107 0800 df69 0064 0002 65fe 4b60 0000  .....i.d..e.K`..
        0x0030:  0000 9efe 0900 0000 0000 1011 1213 1415  ................
        0x0040:  1617 1819 1a1b 1c1d 1e1f 2021 2223 2425  ...........!"#$%
        0x0050:  2627 2829 2a2b 2c2d 2e2f 3031 3233 3435  &'()*+,-./012345
        0x0060:  3637                                     67
23:51:01.685577 IP modern_linux > aws_box: ICMP echo reply, id 100, seq 2, length 64
        0x0000:  1e64 9e36 e45d 8cc1 214d 7816 0800 4500  .d.6.]..!Mx...E.
        0x0010:  0054 1ddc 0000 4001 32c2 1400 0107 1400  .T....@.2.......
        0x0020:  0105 0000 e769 0064 0002 65fe 4b60 0000  .....i.d..e.K`..
        0x0030:  0000 9efe 0900 0000 0000 1011 1213 1415  ................
        0x0040:  1617 1819 1a1b 1c1d 1e1f 2021 2223 2425  ...........!"#$%
        0x0050:  2627 2829 2a2b 2c2d 2e2f 3031 3233 3435  &'()*+,-./012345
        0x0060:  3637                                     67