tcpdump -i eth1.573 -n udp port 5555 -X -vv
tcpdump: listening on eth1.573, link-type EN10MB (Ethernet), capture size 262144 bytes
23:15:03.427106 IP (tos 0x0, ttl 61, id 18619, offset 0, flags [DF], proto UDP (17), length 172)
    x.x.x.x.28733 > x.x.x.x.personal-agent: [udp sum ok] UDP, length 144
	0x0000:  4500 00ac 48bb 4000 3d11 f535 ac10 0004  E...H.@.=..5....
	0x0010:  0a32 490a 703d 15b3 0098 835a 78da ab56  .2I.p=.....Zx..V
	0x0020:  ca4c 51b2 5250 3236 37b4 344a 4a4a d435  .LQ.RP267.4JJJ.5
	0x0030:  4a32 4ad6 3531 b130 d5b5 4c34 37d7 4db2  J2J.51.0..L47.M.
	0x0040:  b44c 3330 48b3 344a 354d 55d2 5150 2a4e  .L30H.4J5MU.QP*N
	0x0050:  2d04 2a37 3430 b604 7272 328b 4b52 f352  -.*740..rr2.KR.R
	0x0060:  8b8a 8142 d5b5 b500 ee02 14b2 3038 3636  ...B........0866
	0x0070:  3161 6666 3061 6435 3236 3830 6235 3331  1aff0ad52680b531
	0x0080:  6230 3235 3865 6430 3239 3363 3465 6461  b0258ed0293c4eda
	0x0090:  3730 3563 3633 3564 3837 3462 3063 6133  705c635d874b0ca3
	0x00a0:  3130 6131 3239 3732 6237 6334            10a12972b7c4