Hi all,
we face a problem when using a stacked VLAN with PPPoE, the inner VLAN tag
is always missing in the packets sent.
Playing with the REORDER_HDR flag does not help. Also the problem neither
depends on the Linux kernel version nor does it
depened on the ethernet hardware. Neverless I append the complete
information here.
Any help is appreciated.
Best Regards,
Gerald Klix
Kernel version:
Linux vesuv6 2.4.20-4GB #1 Mon Mar 17 17:54:44 UTC 2003 i686 unknown unknown
GNU/Linux
/proc/net/vlan/config:
VLAN Dev name | VLAN ID
Name-Type: VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD
eth0.11 | 11 | eth0
eth0.11.6 | 6 | eth0.11
eth0.11.42 | 42 | eth0.11
/proc/net/vlan/eth0.11:
eth0.11 VID: 11 REORDER_HDR: 1 dev->priv_flags: 1
total frames received: 0
total bytes received: 0
Broadcast/Multicast Rcvd: 0
total frames transmitted: 205
total bytes transmitted: 42395
total headroom inc: 0
total encap on xmit: 0
Device: eth0
INGRESS priority mappings: 0:0 1:0 2:0 3:0 4:0 5:0 6:0 7:0
EGRESSS priority Mappings:
/proc/net/vlan/eth0.11.6:
eth0.11.6 VID: 6 REORDER_HDR: 0 dev->priv_flags: 1
total frames received: 0
total bytes received: 0
Broadcast/Multicast Rcvd: 0
total frames transmitted: 193
total bytes transmitted: 41403
total headroom inc: 0
total encap on xmit: 9
Device: eth0.11
INGRESS priority mappings: 0:0 1:0 2:0 3:0 4:0 5:0 6:0 7:0
EGRESSS priority Mappings:
lspci output:
00:00.0 Host bridge: Intel Corp. 440BX/ZX/DX - 82443BX/ZX/DX Host bridge
(rev 03)
00:01.0 PCI bridge: Intel Corp. 440BX/ZX/DX - 82443BX/ZX/DX AGP bridge (rev
03)
00:04.0 ISA bridge: Intel Corp. 82371AB/EB/MB PIIX4 ISA (rev 02)
00:04.1 IDE interface: Intel Corp. 82371AB/EB/MB PIIX4 IDE (rev 01)
00:04.2 USB Controller: Intel Corp. 82371AB/EB/MB PIIX4 USB (rev 01)
00:04.3 Bridge: Intel Corp. 82371AB/EB/MB PIIX4 ACPI (rev 02)
00:09.0 Ethernet controller: 3Com Corporation 3c905C-TX/TX-M [Tornado] (rev
74)
00:0a.0 Network controller: AVM Audiovisuelles MKTG & Computer System GmbH
Fritz!PCI v2.0 ISDN (rev 01)
01:00.0 VGA compatible controller: Matrox Graphics, Inc. MGA G400 AGP (rev
04)
Lsmod output:
Module Size Used by Tainted: P
af_packet 12392 0 (autoclean)
ppp_async 6528 0 (autoclean)
ppp_generic 19644 0 (autoclean) [ppp_async]
8021q 12808 3
videodev 5600 0 (autoclean)
isa-pnp 29672 0 (unused)
ipv6 134388 -1 (autoclean)
mousedev 4148 0 (unused)
joydev 5632 0 (unused)
evdev 4032 0 (unused)
input 3104 0 [mousedev joydev evdev]
usb-uhci 22096 0 (unused)
usbcore 57836 1 [usb-uhci]
raw1394 14516 0 (unused)
ieee1394 32880 0 [raw1394]
3c59x 26064 1
capidrv 25268 2
isdn 125356 2 [capidrv]
slhc 4624 0 [ppp_generic isdn]
capi 17440 0
capifs 3472 1 [capi]
fcpci 540640 2
kernelcapi 29536 4 [capidrv capi fcpci]
capiutil 22208 0 [capidrv kernelcapi]
lvm-mod 65412 0 (autoclean)
reiserfs 200532 1
Start of ppp configuration:
# Nachladen des PPPoE-Plugins - Der Pfad muss eventuell angepasst werden!
# first line Kernel mode
# second line user mode, but we can simply call 'pppd pty /usr/sbin/pppoe'
to get into user mode
#t#pty /usr/sbin/pppoe
pty "/usr/sbin/pppoe -I eth0.11.6"
# Dial On Demand
#demand
Etherreal exported dump of PPPoE packtes captured with tcpdump:
No. Time Source Destination Protocol
Info
65 9.333128 10.32.45.229 Broadcast PPPoED
Active Discovery Initiation (PADI)
Frame 65 (28 bytes on wire, 28 bytes captured)
Arrival Time: Mar 8, 2006 10:41:49.001867000
Time delta from previous packet: 9.333128000 seconds
Time since reference or first frame: 9.333128000 seconds
Frame Number: 65
Packet Length: 28 bytes
Capture Length: 28 bytes
Protocols in frame: eth:vlan:pppoed
Ethernet II, Src: 10.32.45.229 (00:50:da:47:53:9a), Dst: Broadcast
(ff:ff:ff:ff:ff:ff)
Destination: Broadcast (ff:ff:ff:ff:ff:ff)
Source: 10.32.45.229 (00:50:da:47:53:9a)
Type: 802.1Q Virtual LAN (0x8100)
802.1Q Virtual LAN
000. .... .... .... = Priority: 0
...0 .... .... .... = CFI: 0
.... 0000 0000 0110 = ID: 6
Type: PPPoE Discovery (0x8863)
PPP-over-Ethernet Discovery
0001 .... = Version: 1
.... 0001 = Type: 1
Code: Active Discovery Initiation (PADI) (0x09)
Session ID: 0x0000
Payload Length: 4
PPPoE Tags
Service-Name:
0000 ff ff ff ff ff ff 00 50 da 47 53 9a 81 00 00 06 .......P.GS.....
0010 88 63 11 09 00 00 00 04 01 01 00 00 .c..........
No. Time Source Destination Protocol
Info
89 14.350195 10.32.45.229 Broadcast PPPoED
Active Discovery Initiation (PADI)
Frame 89 (28 bytes on wire, 28 bytes captured)
Arrival Time: Mar 8, 2006 10:41:54.018934000
Time delta from previous packet: 5.017067000 seconds
Time since reference or first frame: 14.350195000 seconds
Frame Number: 89
Packet Length: 28 bytes
Capture Length: 28 bytes
Protocols in frame: eth:vlan:pppoed
Ethernet II, Src: 10.32.45.229 (00:50:da:47:53:9a), Dst: Broadcast
(ff:ff:ff:ff:ff:ff)
Destination: Broadcast (ff:ff:ff:ff:ff:ff)
Source: 10.32.45.229 (00:50:da:47:53:9a)
Type: 802.1Q Virtual LAN (0x8100)
802.1Q Virtual LAN
000. .... .... .... = Priority: 0
...0 .... .... .... = CFI: 0
.... 0000 0000 0110 = ID: 6
Type: PPPoE Discovery (0x8863)
PPP-over-Ethernet Discovery
0001 .... = Version: 1
.... 0001 = Type: 1
Code: Active Discovery Initiation (PADI) (0x09)
Session ID: 0x0000
Payload Length: 4
PPPoE Tags
Service-Name:
0000 ff ff ff ff ff ff 00 50 da 47 53 9a 81 00 00 06 .......P.GS.....
0010 88 63 11 09 00 00 00 04 01 01 00 00 .c..........
No. Time Source Destination Protocol
Info
130 24.360294 10.32.45.229 Broadcast PPPoED
Active Discovery Initiation (PADI)
Frame 130 (28 bytes on wire, 28 bytes captured)
Arrival Time: Mar 8, 2006 10:42:04.029033000
Time delta from previous packet: 10.010099000 seconds
Time since reference or first frame: 24.360294000 seconds
Frame Number: 130
Packet Length: 28 bytes
Capture Length: 28 bytes
Protocols in frame: eth:vlan:pppoed
Ethernet II, Src: 10.32.45.229 (00:50:da:47:53:9a), Dst: Broadcast
(ff:ff:ff:ff:ff:ff)
Destination: Broadcast (ff:ff:ff:ff:ff:ff)
Source: 10.32.45.229 (00:50:da:47:53:9a)
Type: 802.1Q Virtual LAN (0x8100)
802.1Q Virtual LAN
000. .... .... .... = Priority: 0
...0 .... .... .... = CFI: 0
.... 0000 0000 0110 = ID: 6
Type: PPPoE Discovery (0x8863)
PPP-over-Ethernet Discovery
0001 .... = Version: 1
.... 0001 = Type: 1
Code: Active Discovery Initiation (PADI) (0x09)
Session ID: 0x0000
Payload Length: 4
PPPoE Tags
Service-Name:
0000 ff ff ff ff ff ff 00 50 da 47 53 9a 81 00 00 06 .......P.GS.....
0010 88 63 11 09 00 00 00 04 01 01 00 00 .c..........
