Hi,

> "/usr/local/lib/python2.7/dist-packages/ryu/ofproto/ofproto_v1_3_parser.py", 
> line 2385, in _serialize_body
>      self.buf += self.data
> TypeError: can't concat Packet to bytearray

This problem has occurred because it specifies the wrong format in the packet.
You do not specify the ryu.lib.packet.packet.Packet class object to packet.
When generating a packet, call the serialize method of the object and generate 
the byte sequence.

Just for your infomation, how to use Generation of Packets (Serialization) is 
described in the following document.
http://shinpeimuraoka.github.io/ryu-book/en/build/html/packet_lib.html#generation-of-packets-serialization

thanks,


On 2016年02月14日 19:18, Stas Kozlov wrote:
> Hi, All
> 
> What is data format for ofp_parser.OFPPacketOut()? I was trying to build 
> packet with ryu.lib.packet.packet:
> ethernet(dst='00:00:00:00:00:00',ethertype=33024,src='00:07:0d:af:f4:54'), 
> vlan(cfi=0,ethertype=2048,pcp=0,vid=32), 
> ipv4(csum=60513,dst='131.151.32.129',flags=0,header_length=20,identification=35421,offset=1480,option='TEST',proto=1,src='131.151.32.21',tos=0,total_length=24,ttl=64,version=4)
> But got an error:
>    File 
> "/usr/local/lib/python2.7/dist-packages/ryu/ofproto/ofproto_v1_3_parser.py", 
> line 2385, in _serialize_body
>      self.buf += self.data
> TypeError: can't concat Packet to bytearray
> 
>   Thanks in advance
> 
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