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Re: [MirageOS-devel] extracting mac address from stack

  • To: Nicolas Ojeda Bar <no263@xxxxxxxxxxxxxxx>
  • From: Ania Skorupa <ania.skorupa@xxxxxxxxx>
  • Date: Tue, 13 Jan 2015 11:27:06 +0000 (UTC)
  • Cc: "mirageos-devel@xxxxxxxxxxxxxxxxxxxx" <mirageos-devel@xxxxxxxxxxxxxxxxxxxx>
  • Delivery-date: Tue, 13 Jan 2015 11:30:09 +0000
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thanks Nikolas.

as STACKV4 is a type, I can change your code to

Eth.mac (S.IPV4.id (S.ipv4 s))

again, the problem is that I have to pass tap0 as a parameter of type NETWORK to Main and create ethernet interface Eth = Ethif.Make(N), and still receive the error message:

Error: This _expression_ has type S.IPV4.ethif
       but an _expression_ was expected of type Eth.t = Ethif.Make(N).t

any suggestion?

On Saturday, January 10, 2015 12:39 PM, Nicolas Ojeda Bar <no263@xxxxxxxxxxxxxxx> wrote:

You can use the ETHIF.mac (STACKV4.IPV4.id s) (where s is the stack).
The `DEVICE.id` type should probably be abstract, but this works for


On Thu, Jan 8, 2015 at 12:00 PM, Ania Skorupa <ania.skorupa@xxxxxxxxx> wrote:
> hi,
> in stackv4 example in mirage-skeleton, is there any simple way to extract
> mac address of tap0 in unikernel.ml?
> The other way that I can think of is to pass tap0 as another parameter to
> the unikernel, but it doesn't look a neat solution.
> thanks.

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