[Chilli] Chilli reply not getting back to VLAN

[Ming-Ching Tiew]

Below is the sample output from tcpdump -n -e -ttt -vv -i eth0. The packet is sent back to 00:22:fb:c6:9f:b4, which is the client's mac. But that is not getting into eth0.2. Tcpdump on eth0.2 could only see dhcp/bootp request, there is no reply.



tcpdump: listening on eth0, link-type EN10MB (Ethernet), capture size 96 bytes
00:00:00.000000 00:22:fb:c6:9f:b4 > ff:ff:ff:ff:ff:ff, ethertype 802.1Q (0x8100), length 24: vlan 2, p 0, LLC, dsap Null (0x00) Individual, ssap Null (0x00) Response, ctrl 0xaf: Unnumbered, xid, Flags [Response], length 6: 01 00
00:00:03.675980 00:22:fb:c6:9f:b4 > ff:ff:ff:ff:ff:ff, ethertype 802.1Q (0x8100), length 346: vlan 2, p 0, ethertype IPv4, (tos 0x10, ttl 128, id 0, offset 0, flags [none], proto UDP (17), length 328)
    0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from 00:22:fb:c6:9f:b4, length 300, xid 0xff51eb6a, Flags [none] (0x0000)
	  Client-Ethernet-Address 00:22:fb:c6:9f:b4 [|bootp]
00:00:00.004133 00:25:9c:49:e6:47 > 00:22:fb:c6:9f:b4, ethertype 802.1Q (0x8100), length 337: vlan 2, p 0, ethertype IPv4, (tos 0x0, ttl 16, id 0, offset 0, flags [none], proto UDP (17), length 319)
    192.168.182.1.67 > 192.168.182.5.68: BOOTP/DHCP, Reply, length 291, xid 0xff51eb6a, Flags [none] (0x0000)
	  Your-IP 192.168.182.5 [|bootp]


--- On Fri, 4/1/11, Ming-Ching Tiew <mctiew at yahoo.com> wrote:

> From: Ming-Ching Tiew <mctiew at yahoo.com>
> Subject: [Chilli] Chilli reply not getting back to VLAN
> To: chilli at coova.org
> Date: Friday, April 1, 2011, 9:03 AM
> 
> I have been trying to set up a wireless VLAN configuration
> where for chilli I have enable ieee8021q and tcpmss 1400,
> and chilli is listening to eth0 interface, and vlan is
> created on eth0.2 and bridged with the wireless interface.
> 
> Well from the output of chilli debug messages and also
> dumping of eth0, I could see that chilli has already
> responded with the dhcp request and replied with the IP
> accordingly. 
> 
> Somehow the output from chilli is unable to get back to
> eth0.2. Chilli is listening to eth0, that's where it could
> see all the VLAN traffic with VLAN tags. However, the reply
> does not seem to get back to eth0.2 or the bridge interface
> of eth0.2 and wlan0. 
> 
> I am testing it on coovachili 1.2.5. Most likely is my own
> problem and so I am looking for suggestion of how to
> troubleshoot. 
> 
> Thanks.
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