> Запускаем tcpdump на серваке и внимательно смотрим что-где чем отличается...Отслеживал пакеты только между ip клиента и сервера. Через tftpd-hpa вот так:
00:00:00.000000 ARP, Request who-has 192.168.4.123 tell 192.168.4.2, length 28
00:00:04.024833 ARP, Request who-has 192.168.4.2 tell 192.168.4.123, length 46
00:00:00.000007 IP 192.168.4.2 > 192.168.4.123: ICMP echo request, id 6349, seq 0, length 28
00:00:00.000002 ARP, Reply 192.168.4.2 is-at 00:22:15:02:87:09, length 28
00:00:00.000147 IP 192.168.4.123.2070 > 192.168.4.2.69: 27 RRQ "pxelinux.0" octet tsize 0
00:00:00.003964 IP 192.168.4.2.7985 > 192.168.4.123.2070: UDP, length 14
00:00:00.000097 IP 192.168.4.123.2070 > 192.168.4.2.7985: UDP, length 17
00:00:00.000154 IP 192.168.4.123.2071 > 192.168.4.2.69: 32 RRQ "pxelinux.0" octet blksize 1456
00:00:00.005019 IP 192.168.4.2.44373 > 192.168.4.123.2071: UDP, length 15
00:00:00.000165 IP 192.168.4.123.2071 > 192.168.4.2.44373: UDP, length 4
00:00:00.000057 IP 192.168.4.2.44373 > 192.168.4.123.2071: UDP, length 1460
00:00:00.000003 IP 192.168.4.2 > 192.168.4.123: udp
00:00:01.001026 IP 192.168.4.2.44373 > 192.168.4.123.2071: UDP, length 1460
00:00:00.000003 IP 192.168.4.2 > 192.168.4.123: udp
00:00:02.001002 IP 192.168.4.2.44373 > 192.168.4.123.2071: UDP, length 1460
00:00:00.000006 IP 192.168.4.2 > 192.168.4.123: udp
00:00:04.000981 IP 192.168.4.2.44373 > 192.168.4.123.2071: UDP, length 1460
00:00:00.000004 IP 192.168.4.2 > 192.168.4.123: udp
00:00:08.000991 IP 192.168.4.2.44373 > 192.168.4.123.2071: UDP, length 1460
00:00:00.000003 IP 192.168.4.2 > 192.168.4.123: udp
00:00:16.001004 IP 192.168.4.2.44373 > 192.168.4.123.2071: UDP, length 1460
00:00:00.000004 IP 192.168.4.2 > 192.168.4.123: udp
00:00:05.033647 IP 192.168.4.123.2072 > 192.168.4.2.69: 32 ACK block 0
00:01:11.987620 IP 192.168.4.123.2073 > 192.168.4.2.69: 32 ACK block 0
00:01:48.040568 IP 192.168.4.123.2074 > 192.168.4.2.69: 32 ACK block 0
00:02:23.962811 IP 192.168.4.123.2075 > 192.168.4.2.69: 32 ACK block 0
Через inetd тоже самое только в конце еще пару строчек оказалось:
00:00:43.620942 IP 192.168.4.2.38743 > 192.168.4.123.80: Flags [S], seq 3191904885, win 65535, options [mss 1360,nop,wscale 6,sackOK,TS val 1373133972 ecr 0], length 0
00:00:02.999618 IP 192.168.4.2.38743 > 192.168.4.123.80: Flags [S], seq 3191904885, win 65535, options [mss 1360,nop,wscale 6,sackOK,TS val 1373136972 ecr 0], length 0
Если руками качать один файл через консоль, то вот так:
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on bge0, link-type EN10MB (Ethernet), capture size 65535 bytes
00:00:00.000000 IP 192.168.1.231.4882 > 192.168.4.2.69: 19 RRQ "pxelinux.0" octet
00:00:00.039110 IP 192.168.4.2.55978 > 192.168.1.231.4882: UDP, length 516
00:00:00.127481 IP 192.168.1.231.4882 > 192.168.4.2.55978: UDP, length 4
00:00:00.000066 IP 192.168.4.2.55978 > 192.168.1.231.4882: UDP, length 516
00:00:00.128078 IP 192.168.1.231.4882 > 192.168.4.2.55978: UDP, length 4
00:00:00.000071 IP 192.168.4.2.55978 > 192.168.1.231.4882: UDP, length 516
00:00:00.129131 IP 192.168.1.231.4882 > 192.168.4.2.55978: UDP, length 4
00:00:00.000042 IP 192.168.4.2.55978 > 192.168.1.231.4882: UDP, length 516
00:00:00.126795 IP 192.168.1.231.4882 > 192.168.4.2.55978: UDP, length 4
00:00:00.000032 IP 192.168.4.2.55978 > 192.168.1.231.4882: UDP, length 516
00:00:00.125816 IP 192.168.1.231.4882 > 192.168.4.2.55978: UDP, length 4
00:00:00.000033 IP 192.168.4.2.55978 > 192.168.1.231.4882: UDP, length 516
00:00:00.125158 IP 192.168.1.231.4882 > 192.168.4.2.55978: UDP, length 4
00:00:00.000028 IP 192.168.4.2.55978 > 192.168.1.231.4882: UDP, length 516
00:00:00.126849 IP 192.168.1.231.4882 > 192.168.4.2.55978: UDP, length 4
00:00:00.000026 IP 192.168.4.2.55978 > 192.168.1.231.4882: UDP, length 516
00:00:00.130110 IP 192.168.1.231.4882 > 192.168.4.2.55978: UDP, length 4
00:00:00.000027 IP 192.168.4.2.55978 > 192.168.1.231.4882: UDP, length 516
00:00:00.129847 IP 192.168.1.231.4882 > 192.168.4.2.55978: UDP, length 4
00:00:00.000025 IP 192.168.4.2.55978 > 192.168.1.231.4882: UDP, length 516
00:00:00.126150 IP 192.168.1.231.4882 > 192.168.4.2.55978: UDP, length 4
00:00:00.000031 IP 192.168.4.2.55978 > 192.168.1.231.4882: UDP, length 516
00:00:00.128954 IP 192.168.1.231.4882 > 192.168.4.2.55978: UDP, length 4
00:00:00.000027 IP 192.168.4.2.55978 > 192.168.1.231.4882: UDP, length 516
00:00:00.127623 IP 192.168.1.231.4882 > 192.168.4.2.55978: UDP, length 4
00:00:00.000030 IP 192.168.4.2.55978 > 192.168.1.231.4882: UDP, length 516
00:00:00.127354 IP 192.168.1.231.4882 > 192.168.4.2.55978: UDP, length 4
00:00:00.000029 IP 192.168.4.2.55978 > 192.168.1.231.4882: UDP, length 516
00:00:00.126499 IP 192.168.1.231.4882 > 192.168.4.2.55978: UDP, length 4
00:00:00.000025 IP 192.168.4.2.55978 > 192.168.1.231.4882: UDP, length 516
00:00:00.127275 IP 192.168.1.231.4882 > 192.168.4.2.55978: UDP, length 4
00:00:00.000026 IP 192.168.4.2.55978 > 192.168.1.231.4882: UDP, length 516
00:00:00.128103 IP 192.168.1.231.4882 > 192.168.4.2.55978: UDP, length 4
00:00:00.000029 IP 192.168.4.2.55978 > 192.168.1.231.4882: UDP, length 516
00:00:00.127016 IP 192.168.1.231.4882 > 192.168.4.2.55978: UDP, length 4
00:00:00.000026 IP 192.168.4.2.55978 > 192.168.1.231.4882: UDP, length 516
00:00:00.128978 IP 192.168.1.231.4882 > 192.168.4.2.55978: UDP, length 4
00:00:00.000041 IP 192.168.4.2.55978 > 192.168.1.231.4882: UDP, length 516
00:00:00.130853 IP 192.168.1.231.4882 > 192.168.4.2.55978: UDP, length 4
00:00:00.000027 IP 192.168.4.2.55978 > 192.168.1.231.4882: UDP, length 516
00:00:00.127685 IP 192.168.1.231.4882 > 192.168.4.2.55978: UDP, length 4
00:00:00.000030 IP 192.168.4.2.55978 > 192.168.1.231.4882: UDP, length 516
00:00:00.125492 IP 192.168.1.231.4882 > 192.168.4.2.55978: UDP, length 4
00:00:00.000024 IP 192.168.4.2.55978 > 192.168.1.231.4882: UDP, length 516
00:00:00.125429 IP 192.168.1.231.4882 > 192.168.4.2.55978: UDP, length 4
00:00:00.000025 IP 192.168.4.2.55978 > 192.168.1.231.4882: UDP, length 516
00:00:00.126547 IP 192.168.1.231.4882 > 192.168.4.2.55978: UDP, length 4
00:00:00.000034 IP 192.168.4.2.55978 > 192.168.1.231.4882: UDP, length 516
00:00:00.126211 IP 192.168.1.231.4882 > 192.168.4.2.55978: UDP, length 4
00:00:00.000029 IP 192.168.4.2.55978 > 192.168.1.231.4882: UDP, length 516
00:00:00.127514 IP 192.168.1.231.4882 > 192.168.4.2.55978: UDP, length 4
00:00:00.000022 IP 192.168.4.2.55978 > 192.168.1.231.4882: UDP, length 516
00:00:00.126736 IP 192.168.1.231.4882 > 192.168.4.2.55978: UDP, length 4
00:00:00.000033 IP 192.168.4.2.55978 > 192.168.1.231.4882: UDP, length 516
00:00:00.127139 IP 192.168.1.231.4882 > 192.168.4.2.55978: UDP, length 4
00:00:00.000028 IP 192.168.4.2.55978 > 192.168.1.231.4882: UDP, length 516
00:00:00.128075 IP 192.168.1.231.4882 > 192.168.4.2.55978: UDP, length 4
00:00:00.000031 IP 192.168.4.2.55978 > 192.168.1.231.4882: UDP, length 516
00:00:00.127940 IP 192.168.1.231.4882 > 192.168.4.2.55978: UDP, length 4
00:00:00.000022 IP 192.168.4.2.55978 > 192.168.1.231.4882: UDP, length 516
00:00:00.127274 IP 192.168.1.231.4882 > 192.168.4.2.55978: UDP, length 4
00:00:00.000025 IP 192.168.4.2.55978 > 192.168.1.231.4882: UDP, length 354
00:00:00.124714 IP 192.168.1.231.4882 > 192.168.4.2.55978: UDP, length 4
^C
63 packets captured
13520 packets received by filter
0 packets dropped by kernel
Куда копать?