On Wed, Apr 11, 2018 at 6:25 AM, Aham Brahmasmi <aham.brahma...@gmx.com> wrote:
>> Sent: Wednesday, April 11, 2018 at 10:18 AM
>> From: "Ayaka Koshibe" <akosh...@gmail.com>
>> To: misc@openbsd.org
>> Subject: Re: Cannot access internet with virtual switch
>>
>> > This informs us that for a PACKET_OUT with action OUTPUT, it cannot
>> > have its port as ANY. Now, I do not know why for a PACKET_OUT message,
>> > an action OUTPUT cannot have port as ANY. More importantly, I do not
>> > know why the controller seems to be sending the PACKET_OUT with action
>> > OUTPUT and port ANY.
>>
>> A PACKET_OUT is usually a response to some message e.g. a PACKET_IN,
>> so it would probably help to see which message (if any) the switch
>> sent to the controller to receive that PACKET_OUT.
>
> Thank you Koshibe-san for your reply.
>
> From what I understand, the PACKET_IN for that PACKET_OUT seems to be
> the following:
>
> ofrelay_input_done: connection 1.1: 179 bytes from switch 1
> /dev/switch0 > any: version 1_3 type PACKET_IN length 179 xid 81972
>         buffer NO_BUFFER length 129 reason REASON_NO_MATCH table <0> cookie 
> 0x0000000000000000
>         match type OXM length 24 (padded to 26)
>         ox match class OPENFLOW_BASIC type IN_PORT hasmask no length 4
>                 1
>         ox match class OPENFLOW_BASIC type META hasmask no length 8
>                 0
> switch_learn: updated mac ac:1f:6b:2e:22:ce on switch 1 port 1
> packet_input: ac:1f:6b:2e:22:ce -> 00:c8:8b:e2:d6:87, port 1 -> 1

This seems to be the right message. It looks like switchd will set the
output port to ANY if it sees a loop (which port 1 -> 1 suggests),
intended for dropping the packet. Do you have loops?

> I have also attached the complete output of "doas switchd -dvvvv". This
> is because I do not know whether the above message is the correct
> PACKET_OUT message corresponding to the PACKET_IN message.
>
> Regards,
> ab
> ---------|---------|---------|---------|---------|---------|---------|--

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