Dear all , Greeting ..
I get error when I run simple dhcp server , I capture the packet in
wireshark and I see the packet is content 4 protocols ( Ethernet , ipv4 ,
udp , dhcp discover ) but in Ryu framework I see only 3 protocols such as
below :
msg = ev.msg
pkt = packet.Packet(msg.data)
print pkt.protocols
""" outputs:
[ethernet(dst='ff:ff:ff:ff:ff:ff',ethertype=2048,src='a0:36:9f:2d:a7:f9'),
ipv4(csum=14742,dst='255.255.255.255',flags=0,header_length=5,identification
=0,offset=0,
option=None,proto=17,src='0.0.0.0',tos=16,total_length=328,ttl=128,version=4
),
udp(csum=39669,dst_port=67,src_port=68,total_length=308),
'\x01\x01\x06\x00F\x08\x9f\x06\x00\xc8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x
00\x00\x00\x00\x00\x00\x00\x00
\x00\xa06\x9f-\xa7\xf9\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x
00\x00\x00\x00\x00\x00\x00\x00
\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00
\x00\x00\x00\x00\x00\x00\x00
\x00\x00\x00\x00\x00\x04\n\x00\xaa\x00\x00\x00\x00']
"""
I know this packet is dhcp discover becoues as you see in udp src_port is 68
and dst_port is 67 but how can I parsing this packet when I write the code
below I did nt get any thing :
dhcpPacket = pkt.get_protocol(dhcp.dhcp)
print dhcppacket
''' output :
None
'''
Please if you can help me to solve this issue .
Best Regards
Munther Numan
Master Student
Faculty of Engineering
University Putra Malaysia
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