Would I benefit swapping PiB to a Pi2

[K4AA]

@toverfield

@K4AA

If I do an in-place swap from PiB+ to a Pi2, will it have to be re-registered or will FA pick up a new MAC address associated with the same sending IP address? Joe K4AA

I just did that. To preserve my stats, I am spoofing my old MAC address in the /boot/cmdline.txt file.

pi@piaware ~ $ cat /boot/cmdline.txt
dwc_otg.lpm_enable=0 console=ttyAMA0,115200 console=tty1 root=/dev/mmcblk0p2 rootfstype=ext4 elevator=deadline rootwait smsc95xx.macaddr=b8:27:eb:xx:xx:xx

I tried every variation of this. I assumed smsc95xx is substituted with the site code. And of course xx xx etc is the old mac address.
ifconfig shows the old mac address. The router is not fooled and issues a new IP. The new mac address is transmitted to FA rather than the old. So it doesn’t work.
I would appreciate if you could go over the steps again. Should the cmdline.txt be on one or two lines? Does it require a cold reboot?

Tnx Joe K4aa

[obj]

@K4AA

I assumed smsc95xx is substituted with the site code.

No - leave it as literally smsc95xx. It’s the name of the ethernet driver (it is named after the family of chipsets it handles).

[k6rtm]

@K4AA

@toverfield

@K4AA

If I do an in-place swap from PiB+ to a Pi2, will it have to be re-registered or will FA pick up a new MAC address associated with the same sending IP address? Joe K4AA

I just did that. To preserve my stats, I am spoofing my old MAC address in the /boot/cmdline.txt file.

pi@piaware ~ $ cat /boot/cmdline.txt
dwc_otg.lpm_enable=0 console=ttyAMA0,115200 console=tty1 root=/dev/mmcblk0p2 rootfstype=ext4 elevator=deadline rootwait smsc95xx.macaddr=b8:27:eb:xx:xx:xx

I tried every variation of this. I assumed smsc95xx is substituted with the site code. And of course xx xx etc is the old mac address.
ifconfig shows the old mac address. The router is not fooled and issues a new IP. The new mac address is transmitted to FA rather than the old. So it doesn’t work.
I would appreciate if you could go over the steps again. Should the cmdline.txt be on one or two lines? Does it require a cold reboot?

Tnx Joe K4aa

cmdline.txt is A SINGLE LINE – which can get fairly long if you have a lot of stuff in it! As an example (from one of my honeypots, showing setting the mac address to b8:27:eb:e6:29:d3):

dwc_otg.lpm_enable=0 console=ttyAMA0,115200 kgdboc=ttyAMA0,115200 console=tty1 root=PARTUUID=9B650C5E-7318-495C-8128-1D63F80A9867 rootdelay=5 rootfstype=ext4 elevator=deadline rootwait fbcon=map:10 fbcon=font:VGA8x8 smsc95xx.macaddr=b8:27:eb:e6:29:d3 

…and when you change it, yes, you need to reboot

bob k6rtm

[K4AA]

Thanks OBJ and K6RTM. I’ll implement that this AM. Joe K4AA

[K4AA]

OK spoofed MAC address. Works great now on Pi2. Even the router was spoofed which surprised me. The spoof must change the flash memory on the actual ethernet hardware on the Pi. Which of course makes sense.

Thanks guys…Joe K4AA