[HECnet] PyDECnet and IPv6

[Paul Koning]

A quick followup on my earlier note about Python 3 on BeagleBone: the total size of the installed code is just over 200 MB.

	paul

> On Dec 1, 2020, at 8:18 PM, Paul Koning <paulkoning at comcast.net> wrote:
> 
>> On Dec 1, 2020, at 5:15 PM, David Moylan <djm at wiz.net.au> wrote:
>> 
>>> From: owner-hecnet at Update.UU.SE [mailto:owner-
>>> hecnet at Update.UU.SE] On Behalf Of John H. Reinhardt
>>> Sent: Wednesday, 2 December 2020 6:18 AM
>>> To: hecnet at Update.UU.SE
>>> Subject: Re: [HECnet] PyDECnet and IPv6
>>> 
>>> I had an Edgerouter Lite for my internet but upgraded to an Edgerouter 4 last
>>> year when I set up the VPN to the MacMini Colo in Las Vegas.
>>> 
>>> Next I have to see if I can put Paul's PyDECnet on it for HECnet routing.
>> 
>> That sounds like an awesome challenge, however I don't know if you'll meet the base requirements.
>> 
>> The edgerouter 1.x firmware ships with Python 2.7.3 and the 2.x firmware ships with Python 2.7.13.
>> Memory wise you have 1GB with around 600MB free on the ER4 and 500MB with around 200MB free on the ERL.
>> 
>> And yes - you can add in linux packages to get Python 3 running on the Edgerouter, but I would recommend that you don't.
>> 
>> The issue comes down to firmware upgrades. When you install a new firmware image, you risk breaking the third party addons.
> 
> My approach would be to build a Python 3 from source and install it in the directory used for locally built code, which is under /usr/local (that's what the default installation procedure does).  That's a standard convention that should keep you out of the way of any packager-supplied standard bits.
> 
> I install Python3 and PyDECnet on my (old, 2 GB total flash size) BeagleBone Black.  To run the build locally rather than cross-building -- slower but easy -- I had to plug in a micro-SD card for extra space, but once the build was done the actual installed code fit fine on that root file system.  You can see the result on HECnet, node PYBBB.
> 
> 	paul
>