On Jul 10, 2012, at 12:48 AM, Rashmi wrote:
> Hi Weiyang,
> 
> I am running into the same problem---> unable to get srcip and dstip from the 
> packet.next object as packet.next is None! Please let me know if you found 
> out 
> anything.
> 
> Rashmi

Here's a couple of tips for sorting out problems with packet parsing:

1. Turn on very verbose (-v -v) logging and watch for relevant messages.

2. Look at the relevant ofp_packet_in messages in Wireshark with the OpenFlow 
dissector and see if they're complete (sometimes switches truncate packets, 
which will keep them from being parsed correctly!)

-- Murphy

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