[eugene1973]

https://forums.he.net/index.php?topic=3452.0

This talks about SLAAC and disabling a broadcast filter.

See if proper dev has bcast tag????

Br0

[Per Yngve Berg]

Here is my dhcp6c config:

interface eth0 {
send rapid-commit;
send ia-pd 1;
request domain-name-servers, domain-name;
};

id-assoc pd 1 {
prefix ::/48 infinity;
prefix-interface br0 {
sla-id 0;
sla-len 16;
};
prefix-interface ath1 {
sla-id 1;
sla-len 16;
};
prefix-interface eth1.3 {
sla-id 2;
sla-len 16;
};
};


DNSMasq:

quiet-dhcp
quiet-dhcp6
quiet-ra
enable-ra
dhcp-range=::10,::200,constructor:br0,ra-names,slaac,64,24h
dhcp-range=::10,::200,constructor:ath1,ra-names,slaac,64,24h
dhcp-range=::10,::200,constructor:eth1.3,ra-names,slaac,64,24h

[probity]

eugene1973
Honestly I think that Radvd should be enabled.
I wish I had it enabled, but my router cannot get IPv6 from ISP then. I don't know why.

Using prefixing is important too.
Maybe if you just add a route from st dev on dd-wrt box to st/sp dev on gateway it will go global.
How is it possible to provide that? I do need step-by-step instructions or at least the link where I can read more about it. I quite far from Linux. I'm not an expert, sorry about that.

This talks about SLAAC and disabling a broadcast filter.
Yes, but they are talking about Aruba Instant Access Points, aren't they?

Per Yngve Berg

Thank you for sharing your configs!

I cannot see you have posted the output of 'ifconfig' on the router.
I must have missed your request, sorry. Here is it:

[eugene1973]

Tell me what you see that says ipv6 doesn't work when you turn it on. Turn it on and paste what you see, then repaste the ifconfig -a. Also paste in "ip -6 address show".

[probity]

eugene1973

Now when I'm enabling Radvd my router is able to get IPv6 address from ISP, but little bit later (5 minutes after rebooting).

Here is my ifconfig output:

[Per Yngve Berg]

Everything looks correct. Only difference s that your ISP is using PPPoE, while mine is using plain DHCP.

Have you seen this topic?
https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=311323&highlight=pppoe+ipv6

With PPPoE, MTU is reduced to 1492.

[eugene1973]

About your code:

local=/local/
expand-hosts
interface=br0
dhcp-range=::,constructor:br0,ra-stateless,1400
enable-ra
quiet-ra
quiet-dhcp
quiet-dhcp6


You opened the br0 interface. Fine, that works. Next, your dhcp range seems fine
but it only calls a low, try a high, and
don't make it the default route. Thats
probably why it takes so long. Use the
bounds of you lowest numbered address,
2xxx::1 . The high should be fe80:ffff:ffff
:ffff:ffff:ffff:ffff:ffff. See next post.

[eugene1973]

Since you have pppoe dhcp still tunnels through. You are using dhcp addressing. Just like everyone else. Yes change mtu. 1472 is always best. Ipv4 loves 1472. Think about addressing the other devs because it will all prune. Think about adding ra managed along with ra stateless, or also stateful. Probably ra stateful and managed is best. These will help you get external pings. Also get rid of that "quiet" crap. You want to be ON the ipv6 network. There is much more to add. Better look at other examples, to add other important stuff.

[eugene1973]

I don't think you have to specify any pppoe addressing but I'm not sure. Pppoe uses different addressing, keep that in mind. Look up which. Isp says you're ok with regular dhcp, then ok maybe you are maybe you aren't. fe81 is a common tunnel address. fe80 isn't.

[Per Yngve Berg]

Yours: dhcp-range=::,constructor:br0,ra-stateless,1400

Mine: dhcp-range=::10,::200,constructor:br0,ra-names,slaac,64,24h

[probity]

Well, I've tried the next steps:
1. I've removed this

[Per Yngve Berg]

What does the routing table look like?

route -A inet6

[eugene1973]

I don't know how to publish ipv6 addresses yet. Hope I helped. If you ever get a chance to look in Windows and do an "ipconfig /all", I think it is. You will see that a flag exists in the readings that says published. I assume it means published in it's own local area, but not necessarily on the local lan. That's why a computer can ping itself. I think it works the same on the external(internet). The gateway must advertise and publish the address. The most likely culprit to do this is dhcpv6/ipv6 client. As opposed to dhcpv6 server. You must find the ipv6/dhcpv6 client settings to do this. You may not be able to do this at all without a static address from your ISP. If you are trying to publish your in addresses. You should certainly be able to do so for other websites/addresses.

[eugene1973]

I saw you ifconfig -a, your br0 has the Bcast flag. As do some others. Don't worry about that article. Let me know if you see no Windows flag that says publish.

[eugene1973]

Don't forget, ask your ISP if you get an IP address higher or a little lower than 2a00 , Most people get three address ranges. I get fe80 , 2001 , and 2601 . Actually fe80 is already yours. But you get that traffic range.