9.166.4 ==> 60.6.236.57
ver = 0x4 hlen = 0x5 tos = 0x0 tlen = 0xb4
id = 0xd397 flags = 0x40 frag off=0x0
ttl = 0xfc proto=0x11 chksum = 0x11f9
-- UDP --
source port = 0x35 dest port = 0x5c6
len = 0xa0 checksum = 0xe284
-- DATA --
00000014: 00 01 00 01 | ....
00000024: 00 03 00 03 04 6d 61 69 6c 04 73 69 6e 61 03 63 | .....mail.sina.c
00000034: 6f 6d 02 63 6e 00 00 01 00 01 c0 0c 00 01 00 01 | om.cn...........
00000044: 00 00 00 19 00 04 3c 1c a4 12 c0 0c 00 02 00 01 | ......<.........