Hello!
Scenario: kernel 2.6.22.9, SysKonnect SK-9E21D, vlan, redirecting for
packets arriving on than vlan to ifb.
Using tcpdump on ifb iinterface I see the following:
03:30:17.322484 5a:71:6f:15:00:17 > 00:00:5a:71:00:00, ethertype Unknown
(0xcb69), length 1522:
0x0000: 2000 0800 4500 05dc 3a2f 4000 3c06 d868 ....E...:/@.<..h
0x0010: c299 9143 c3e6 0ec1 0050 0f2a e2c1 ce38 ...C.....P.*...8
0x0020: 792b a65c 5010 1a6d 6d13 0000 9b44 5dd1 y+.\P..mm....D].
0x0030: e3b3 771e def5 bd61 19fb 393f 7d58 fde3 ..w....a..9?}X..
0x0040: 8e7d 2b86 5251 6772 48d0 b083 e467 f2c0 .}+.RQgrH....g..
0x0050: 2bca +.
03:30:17.322622 5a:71:6f:15:00:17 > 00:00:5a:71:00:00, ethertype Unknown
(0xcb69), length 1522:
0x0000: 2000 0800 4500 05dc 3a31 4000 3c06 d866 ....E...:1@.<..f
0x0010: c299 9143 c3e6 0ec1 0050 0f2a e2c1 d3ec ...C.....P.*....
0x0020: 792b a65c 5010 1a6d a79d 0000 f6a1 b2d8 y+.\P..m........
0x0030: e47d 3d29 dcad 8685 3b73 d0fa 63ad 046d .}=)....;s..c..m
0x0040: 2064 1c8a 40ee 8490 60f0 7eb5 2458 690f .d..@...`.~.$Xi.
0x0050: 19c0 ..
Doing redirect on another vlan on the same adapter shows this:
03:32:01.943833 5a:71:6f:15:00:04 > 00:00:5a:71:00:00, ethertype Unknown
(0x23b1), length 1514:
0x0000: ccec 0800 4500 05d4 f3d5 4000 3d06 c329 ....E.....@.=..)
0x0010: c395 f88a c3e6 011e 0050 3c1d 7527 ebcf .........P<.u'..
0x0020: b69c 46d7 5010 1ae5 24d4 0000 8f45 14cf ..F.P...$....E..
0x0030: fd3a 20d7 47e9 d3a7 ffd1 d3a7 474c 8a3a .:..G.......GL.:
0x0040: 3d3d 3f4c cd35 a747 fd31 da7d 1e8e 8e8f ==?L.5.G.1.}....
0x0050: a74f .O
03:32:01.943835 5a:71:6f:15:00:04 > 00:00:5a:71:00:00, ethertype Unknown
(0x23b1), length 74:
0x0000: ccec 0800 4500 0034 d884 4000 7b06 7023 ....E..4..@.{.p#
0x0010: 4dec a079 c3e6 04d0 0db0 272a 4ff8 4103 M..y......'*O.A.
0x0020: 2012 ea72 8010 ffff d6f4 0000 0101 050a ...r............
0x0030: 2012 ec8a 2012 eea2 b2d2 2187 ..........!.
03:32:01.944488 5a:71:6f:15:00:04 > 00:00:5a:71:00:00, ethertype Unknown
(0x23b1), length 68:
0x0000: ccec 0800 4500 002e 3ba9 4000 7e06 99ac ....E...;.@.~...
0x0010: 59d7 010b c3e6 08ac da5d 0a9e cfbd 8a73 Y........].....s
0x0020: 8cd3 a15e 5018 fc31 109e 0000 c106 4402 ...^P..1......D.
0x0030: 091a 4f53 b574 ..OS.t
Doing redirect on other vlans (on other adapters, same PC) I see normal
IP traffic. Everyting works fine on eth interfaces.
Everything works fine on vlans on other adapters (intel, broadcom), only
vlans on SysKonnect has this behavior. Seeing
such packets on ifb makes impossible to do any further processing.
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