[Commotion-discuss] Accessing resources across the network

[Josh King]

Hi Nat,

You're right, but the ranges are a little off. It would be more
accurate to say that the nodes generate all of their addresses from the
same base, which is a hash of the mac address. So a node that has a
mesh address of 100.64.47.9 might give out addresses in the 10.47.9.X
range (it would necessarily be that clear because 100.64.0.0 is a /10
network, but you get the idea).

This obviously isn't perfect, so a future version of Commotion will
generate IPv6 addresses generated from a hash of their crypto key, with
collision avoidance, and will NAT any IPv4 networks.

On Tue, 2016-02-16 at 10:04 -0500, Nat Meysenburg wrote:
> john whelan <jwhelan0112 at gmail.com> writes:
> 
> > For some reason I was thinking the IP address was leased from the
> > router
> > and not fixed.
> > 
> 
> The client address is assigned from the router.
> 
> However, by default, the way the IP addressing is set up in
> Commotion,
> the nodes get IPs for the mesh in the 100.64.0.0/10 range (which
> according to the specs is reserved for carrier grade NAT). The nodes
> hand
> out DHCP addresses to clients in the 10.x.x.x (standard private
> network)
> range. I don't recall the actual default subnets offhand.
> 
> Anyway, if I remember correctly (and it is indeed possible that I
> have
> this all wrong), the range in which a node hands out DHCP leases is
> based off of its 100.64.x address.
> 
> The end result *should* be (again if I'm not totally mis-
> remembering),
> that client devices have addresses that that should be routable to
> each
> other, and the nodes should be able to handle the routing.
> 
> So for example, node A is handing out leases in 10.64.8.x, and node B
> is
> handing them out in 10.64.7.x; client A is on node A with an IP of
> 10.64.8.14, and client B is on node B with an IP  of 10.64.7.151.
> They
> should be able to ping each other.
> 
> Someone please correct me if I'm way off base here.
> 
> ~~Nat
> 
> 
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-- 
Josh King
Lead Technologist
The Open Technology Institute
http://opentechinstitute.org
PGP Fingerprint: 8269 ED6F EA3B 7D78 F074 1E99 2FDA 4DA1 69AE 4999

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