Re: pcduino3_nano networking problem.

[searider74 <searider74@xxxxxxxxx>]

Is your MAC address changing on your wireless card or your ethernet lan port?

Sent from my T-Mobile 4G LTE Device

-------- Original message --------
From: Rance Hall <ranceh@xxxxxxxxx> 
Date: 8/11/17  8:32 AM  (GMT-08:00) 
To: Peter Robinson <pbrobinson@xxxxxxxxx> 
Cc: arm@xxxxxxxxxxxxxxxxxxxxxxx 
Subject: [fedora-arm] Re: pcduino3_nano networking problem.

On Fri, Aug 11, 2017 at 10:03 AM, Peter Robinson <pbrobinson@xxxxxxxxx> wrote:

On Thu, Aug 10, 2017 at 10:28 PM, Rance Hall <ranceh@xxxxxxxxx> wrote:
> Fedora Arm Team:
>

<snip>

>
> I don't understand why two different os'es report 2 different mac addresses
> for the same physical nic.  I know you can spoof nics, but I've not set this
> up so it shouldnt be happening.

I'm not particularly surprised, in both cases the "stable" MAC is
generated based on information in the SoC and I believe the algorithm
did change for some reason. Is it stable on that address between
reboots of Fedora?

Under Fedora 25, it appeared that the mac address changed when the hostname changed (like during the first boot wizard).

Under Fedora 26, I didn't notice this behavior so all I can say is that the reported mac address is stable across reboots, but may not be stable across other changes.  (not convinced yet, at least).

> Also under Fedora 26 the nic can obtain an ip address via dhcp, but I've yet
> to find a network task it can perform once configured.  It can't ping, use
> the tcp stack browse the web, or any other task I tried.

Is the firewall blocking? What does "iptables -L" show?

<snip>

One of the first things I did when troubleshooting was to stop and disable firewalld with systemctl.

Currently iptables -L reports:

Chain INPUT (policy ACCEPT)
target     prot opt source               destination        

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination        

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination 

Thanks for your time.

>
> Rance
>
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