On 20/01/2009, at 12:26, Gavin Atkinson wrote:
Can you try the following:
ping -S 192.168.112.181 host
and then try pinging 192.168.112.181 from the host?
stewie# ping -S 192.168.112.181 192.168.112.8
PING 192.168.112.8 (192.168.112.8) from 192.168.112.181: 56 data bytes
64 bytes from 192.168.112.8: icmp_seq=0 ttl=64 time=0.353 ms
64 bytes from 192.168.112.8: icmp_seq=1 ttl=64 time=0.388 ms
64 bytes from 192.168.112.8: icmp_seq=2 ttl=64 time=0.329 ms
64 bytes from 192.168.112.8: icmp_seq=3 ttl=64 time=0.382 ms
64 bytes from 192.168.112.8: icmp_seq=4 ttl=64 time=0.198 ms
64 bytes from 192.168.112.8: icmp_seq=5 ttl=64 time=0.364 ms
^C
--- 192.168.112.8 ping statistics ---
6 packets transmitted, 6 packets received, 0.0% packet loss
round-trip min/avg/max/stddev = 0.198/0.336/0.388/0.065 ms
mordor:~ wendell$ ping 192.168.112.181
PING 192.168.112.181 (192.168.112.181): 56 data bytes
^C
--- 192.168.112.181 ping statistics ---
4 packets transmitted, 0 packets received, 100% packet loss
I'm wondering if it is the old "em fails to send gratuitous arp on
alias
addition" problem, back again.
Also, run "tcpdump -vvvxXs0 -i em0 host 192.168.112.181" on the host
in
question and try pinging it from a different host. Do you see
anything?
stewie# tcpdump -nvvvxXs0 -i em0 host 192.168.112.181
tcpdump: listening on em0, link-type EN10MB (Ethernet), capture size
65535 bytes
13:18:20.479184 IP (tos 0x0, ttl 64, id 34240, offset 0, flags [none],
proto ICMP (1), length 84) 192.168.112.8 > 192.168.112.181: ICMP echo
request, id 18764, seq 0, length 64
0x0000: 4500 0054 85c0 0000 4001 92da c0a8 7008
e..t....@.....p.
0x0010: c0a8 70b5 0800 da85 494c 0000 3beb
7549 ..p.....IL..;.uI
0x0020: 34f6 0300 0809 0a0b 0c0d 0e0f 1011 1213
4...............
0x0030: 1415 1617 1819 1a1b 1c1d 1e1f 2021
2223 .............!"#
0x0040: 2425 2627 2829 2a2b 2c2d 2e2f 3031 3233 $%&'()*+,-./
0123
0x0050: 3435 3637 4567
13:18:21.479226 IP (tos 0x0, ttl 64, id 25324, offset 0, flags [none],
proto ICMP (1), length 84) 192.168.112.8 > 192.168.112.181: ICMP echo
request, id 18764, seq 1, length 64
0x0000: 4500 0054 62ec 0000 4001 b5ae c0a8 7008
e..tb...@.....p.
0x0010: c0a8 70b5 0800 8684 494c 0001 3ceb
7549 ..p.....IL..<.uI
0x0020: 87f6 0300 0809 0a0b 0c0d 0e0f 1011
1213 ................
0x0030: 1415 1617 1819 1a1b 1c1d 1e1f 2021
2223 .............!"#
0x0040: 2425 2627 2829 2a2b 2c2d 2e2f 3031 3233 $%&'()*+,-./
0123
0x0050: 3435 3637 4567
13:18:22.479392 IP (tos 0x0, ttl 64, id 61679, offset 0, flags [none],
proto ICMP (1), length 84) 192.168.112.8 > 192.168.112.181: ICMP echo
request, id 18764, seq 2, length 64
0x0000: 4500 0054 f0ef 0000 4001 27ab c0a8 7008
e..t....@.'...p.
0x0010: c0a8 70b5 0800 ef82 494c 0002 3deb
7549 ..p.....IL..=.uI
0x0020: 1df7 0300 0809 0a0b 0c0d 0e0f 1011
1213 ................
0x0030: 1415 1617 1819 1a1b 1c1d 1e1f 2021
2223 .............!"#
0x0040: 2425 2627 2829 2a2b 2c2d 2e2f 3031 3233 $%&'()*+,-./
0123
0x0050: 3435 3637 4567
13:18:23.479559 IP (tos 0x0, ttl 64, id 10446, offset 0, flags [none],
proto ICMP (1), length 84) 192.168.112.8 > 192.168.112.181: ICMP echo
request, id 18764, seq 3, length 64
0x0000: 4500 0054 28ce 0000 4001 efcc c0a8 7008
E..T(....@.....p.
0x0010: c0a8 70b5 0800 5081 494c 0003 3eeb
7549 ..p...P.IL..>.uI
0x0020: bbf7 0300 0809 0a0b 0c0d 0e0f 1011
1213 ................
0x0030: 1415 1617 1819 1a1b 1c1d 1e1f 2021
2223 .............!"#
0x0040: 2425 2627 2829 2a2b 2c2d 2e2f 3031 3233 $%&'()*+,-./
0123
0x0050: 3435 3637 4567
[ ]s
--
best regards,
Wendell Martins Borges
Administrador de Redes e Sistemas
Inds. Papel R. Ramenzoni S/A
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