You want to use etherPkt.tostring(), not str(etherPkt).
-- Murphy
On Apr 13, 2012, at 9:07 AM, Rohan Gandhi wrote:
> Hi,
>
> I am trying to send an ARP response, but on the receiver I can see the ASCII
> for the src/dst addresses instead of binary.
>
> The following is my code:
>
> from nox.lib.packet.ethernet import ethernet
>
> mysrc = "11:11:11:11:11:11"
> mydst = "01:02:03:04:05:06"
>
> etherPkt = ethernet()
> etherPkt.set_payload(arpResponse)
> etherPkt.type = ethernet.ARP_TYPE
> etherPkt.src = octstr_to_array(mysrc) #mysrc
> etherPkt.dst = octstr_to_array(mydst) #mysrc
>
> # log.debug("ether pkt %s" % str(etherPkt))
>
> self.send_openflow_packet(dp, str(etherPkt), inport)
>
> on the receiver, the tcpdump shows me the received packet as:
>
> 21:34:35.677597 3a:31:31:3a:31:31 (oui Unknown) > 5b:31:31:3a:31:31 (oui
> Unknown), ethertype Unknown (0x3a31), length 41:
> 0x0000: 5b31 313a 3131 3a31 313a 3131 3a31 313a [11:11:11:11:11:
> 0x0010: 3131 3e30 313a 3032 3a30 333a 3034 3a30 11>01:02:03:04:0
> 0x0020: 353a 3036 3a41 5250 5d 5:06:ARP]
>
> where I get ASCII instead of byte values for all the header fields (and also
> for the character ":"). I am guessing the problem might be while converting
> to string and I might be doing something silly. Can someone please help me in
> sending the correct bytes instead of the ASCII?
>
> Thanks!!
> Rohan
