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Re: [lwip-users] Changing MAC address of network interface?
From: |
Freddie Chopin |
Subject: |
Re: [lwip-users] Changing MAC address of network interface? |
Date: |
Fri, 08 Apr 2016 17:16:59 +0200 |
On pią, 2016-04-08 at 10:27 -0300, Sergio R. Caprile wrote:
> Hi,
> as long as you are not using an application protocol that embeds
> layer-2
> info in application data, you shouldn't have any issues with
> buffered
> data in lwIP, since it does not hold layer-2 info; it is added by
> the
> driver. You would need to restart your DHCP or AutoIP, and your
> PPPoE.
> SNMP is UDP and so not buffered, so that is it for included apps and
> IPv4. IPv6 might also need some restart of the node discovery process
> as
> neighbours would have old (and wrong) information.
> If I am missing something, please let me know.
> As per established data flows, other hosts will send to the old MAC
> until their respective ARP cache entries expire, and that depends on
> their respective timeouts. I've seen upto 4 minutes as normal.
> And yes, this not something you are expected to do on a normal
> operation, so resetting is the best choice.
I'm going to use TCP connections (Modbus TCP protocol), so I guess that
trying to implement on-the-fly change of MAC is probably not worth the
trouble...
Thanks for help!
Regards,
FCh
Re: [lwip-users] Changing MAC address of network interface?, Sergio R. Caprile, 2016/04/08
- Re: [lwip-users] Changing MAC address of network interface?,
Freddie Chopin <=