On 06/28/2017 08:42 PM, Sam wrote:
> On 06/28/2017 03:38 PM, Sam wrote:
>> Howdy,
>>
>> I'm embarrassed that I have to ask for help as I've been using shorewall
>> for 10+ years, but I've wasted a lot of time trying to add IPV6
>> capability to my small home network (mainly for fun). My home net is
>> similar to this: http://shorewall.org/XenMyWay.html only I'm using KVM.
>>
>> ISP is ATT with adsl2 and the nvg510 modem. It normally only supports
>> handing out IPV6 addresses via 6rd. The network that is handed out is a
>> /60 but by default the modem only adds a single /64 route. Since one can
>> get root access on the modem, I've added additional /64 routes. So one
>> network goes to my wan interface, and the other to my lan interface.
>>
>> From the shorewall box, I can use ping6 just fine and I can wget ipv6
>> only web sites as well. I can also ping devices on the lan and the
>> interface on the modem. But from my lan I can only get as far as ping
>> the eth0 and eth1 interfaces on the shorewall box. Using tcpdump, I can
>> see packets going out from eth0 -> eth1 but then there is some weird
>> link local address solicitation going on between the modem and eth1. See
>> the attached notes.txt where I show all interfaces and shorewall traces
>> of a laptop on lan trying to ping cnn.com. You can see the packets going
>> out, but on return, the modem doesn't know where to send them. And then
>> also attached the configs.
>>
>> Probably an idiot mistake, but I'm looking forward to seeing what I did
>> wrong :)
>>
>> Regards,
>> Samuel Smith
>>
>>
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> 
> 
> Ok, so I think I've got it working now. Apparently I'm only used to one
> type of static routing. Looking at
> http://mirrors.deepspace6.net/Linux+IPv6-HOWTO/chapter-configuration-route.html
> 
> 
> I see "Add an IPv6 route through a gateway" and "Add an IPv6 route
> through an interface".
> 
> I'm obviously wanting to go through a gateway, which the right route
> syntax would be:
> 
> ip -6 route add 2602:314:b51b:6088::/64 via
> 2602:314:b51b:6080:208:a1ff:fe05:bf34  dev br1
> 
> 
> And now my route table on the modem is:
> 
> # ip -6 route
> 2602:314:b51b:6080::1 via :: dev sit1  proto kernel  metric 256  mtu
> 1472 advmss 1412 hoplimit 4294967295
> 
> 2602:314:b51b:6080::/64 dev br1  metric 1024  mtu 1472 advmss 1412
> hoplimit 4294967295
> 
> 2602:314:b51b:6088::/64 via 2602:314:b51b:6080:208:a1ff:fe05:bf34 dev
> br1  metric 1024  mtu 1472 advmss 1412 hoplimit 4294967295
> 
> 2602:300::/28 dev sit1  metric 1024  mtu 1472 advmss 1412 hoplimit
> 4294967295
> 
> default dev sit1  metric 1024  mtu 1472 advmss 1412 hoplimit 4294967295
> 
> I guess that is right??
> 

Yes -- that looks correct.

-Tom
-- 
Tom Eastep        \   Q: What do you get when you cross a mobster with
Shoreline,         \     an international standard?
Washington, USA     \ A: Someone who makes you an offer you can't
http://shorewall.org \   understand
                      \_______________________________________________

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