[Cerowrt-devel] Isn't right with the configuration script

Rich Brown richb.hanover at gmail.com
Tue Sep 23 06:56:39 EDT 2014

Hi Eric,

> I changed the internal subnet and it looks like everything changes correctly but what happens is the interface comes up and I can ping it. I see IPv6 traffic coming from it (I believe) but there's no IPv4 response .I should see if I can set up my Linux machine as IPv6 and see if I can access any of the services there. IPv6 is new terrain for me so helpful pointers would be quite welcome.
> I would also appreciate any pointers to documentation explaining why all the little subnets and why so many network interfaces.

This is mostly to isolate various kinds of traffic so the slowest (2.4GHz abg) doesn't interfere with 5GHz wireless or 100mbps Ethernet. There's more info at:

http://www.bufferbloat.net/projects/cerowrt/wiki/Default_network_numbering and


> My goal in this reconfiguration is to create a /24 subnet and give all the interfaces ethernet, Wi-Fi access to the subnet. I'm also going to put in a VPN so that outside consultants can have access to the subnet.
> I think I can improve the configuration script so that it can "fix" what is breaking the IPv4 services and hopefully, increase flexibility. I would like to be able to change the entire network configuration for different subnet sizes etc. but in order to do that, I will need a much better understanding of what the network architecture is supposed to be.
> I would also like to fix the configuration script so that you don't need to know the starting IP address/network. I should be able to just change the desired IP address and rerun the script and have it work. Again, with the knowledge, I'm going to put in the effort to make this happen.
> For some reason, every time I work on a firewall project, I get stuck with IP address management. :-)
> --- eric
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> Cerowrt-devel mailing list
> Cerowrt-devel at lists.bufferbloat.net
> https://lists.bufferbloat.net/listinfo/cerowrt-devel

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