[solved] IPv6 configuration

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jean-paul
DD-WRT Novice


Joined: 23 Jan 2021
Posts: 6

PostPosted: Sat Jan 23, 2021 16:09    Post subject: [solved] IPv6 configuration Reply with quote
Hello,

I try several options but I don't manage to have IPV6 working with my provider. I have my provider (Free) router (Freebox Mini) which have IPv6 enable and I have my R7000 behind this router.

I tried IPv6 Native & DHCPv6 with prefix delegation but nothing.

My computer get an IPV6 adress on the local subnet but no global ipv6 and no access.
My router R7000 get an IPv6 and I can ping it from the internet but not the clients.

I also tried DNSmasq with this config

Code:
server=2606:4700:4700::1111
server=2606:4700:4700::1001
interface=br0
dhcp-range=::1000,::FFFF,constructor:br0,ra-stateless,12h
dhcp-option=option6:dns-server,[::]
ra-param=br0,10,300
enable-ra


vlan2 got a global address


Code:
1: lo:  mtu 65536 state UNKNOWN qlen 1
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
3: eth0:  mtu 1500 state UNKNOWN qlen 1000
    inet6 fe80::e6f4:c6ff:fe0a:cc63/64 scope link
       valid_lft forever preferred_lft forever
4: vlan1@eth0:  mtu 1500 state UP qlen 1000
    inet6 fe80::e6f4:c6ff:fe0a:cc63/64 scope link
       valid_lft forever preferred_lft forever
5: vlan2@eth0:  mtu 1500 state UP qlen 1000
    inet6 XXXX:XXXX:XXXX:XXXX:e6f4:c6ff:fe0a:cc64/64 scope global dynamic
       valid_lft 86306sec preferred_lft 86306sec
    inet6 fe80::e6f4:c6ff:fe0a:cc64/64 scope link
       valid_lft forever preferred_lft forever
6: eth1:  mtu 1500 state UNKNOWN qlen 1000
    inet6 fe80::e6f4:c6ff:fe0a:cc65/64 scope link
       valid_lft forever preferred_lft forever
7: eth2:  mtu 1500 state UNKNOWN qlen 1000
    inet6 fe80::e6f4:c6ff:fe0a:cc76/64 scope link
       valid_lft forever preferred_lft forever
10: br0:  mtu 1500 state UP qlen 1000
    inet6 fe80::e6f4:c6ff:fe0a:cc63/64 scope link
       valid_lft forever preferred_lft forever


and routes are
Code:
XXXX:XXXX:XXXX:XXXX::/64 dev vlan2  metric 256  expires 86267sec
fe80::/64 dev eth0  metric 256
fe80::/64 dev vlan1  metric 256
fe80::/64 dev eth1  metric 256
fe80::/64 dev eth2  metric 256
fe80::/64 dev br0  metric 256
fe80::/64 dev vlan2  metric 256
default via fe80::3627:92ff:fe43:e50d dev vlan2  metric 1024  expires 1667sec
default dev vlan2  metric 2048
unreachable default dev lo  metric -1  error -101
ff00::/8 dev eth0  metric 256
ff00::/8 dev vlan1  metric 256
ff00::/8 dev eth1  metric 256
ff00::/8 dev eth2  metric 256
ff00::/8 dev br0  metric 256
ff00::/8 dev vlan2  metric 256
unreachable default dev lo  metric -1  error -101


Thank you!
Jean-Paul



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Last edited by jean-paul on Fri Apr 16, 2021 18:34; edited 1 time in total
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dwardo
DD-WRT User


Joined: 07 Feb 2013
Posts: 126
Location: France

PostPosted: Sat Jan 23, 2021 18:10    Post subject: Reply with quote
These might help on configuring the freebox a'd understanding how it all works

https://openwrt.org/fr/docs/guide-user/network/ipv6/freebox#:~:text=Dans%20l%27interface%20mafreebox.free,il%20faudra%20compl%C3%A9ter%20plus%20loin.

https://openwrt.org/docs/guide-user/network/ipv6/freebox
jean-paul
DD-WRT Novice


Joined: 23 Jan 2021
Posts: 6

PostPosted: Sun Jan 24, 2021 10:06    Post subject: Reply with quote
Hello,

I did configure the freebox first hop. But my freebox is configured as router, not as bridge.

The R7000 get an ipV6 IP but I cannot even ping the freebox.

I configured manually on my PC (connected to R7000, connect to Freebox) the gateway (local ipv6 adress of the freebox + DNS + ipv6) but I cannot ping the freebox.

I tried both Prefix delegation + ISP Native. I thought there is a problem with the route but I cannot even ping my ISP router (even if it's assigned as the gateway).

The IPv6 is different between vlan2 & eth0, it is normal?

Thank you

_________________
Netgear R7000 Build 46294
jean-paul
DD-WRT Novice


Joined: 23 Jan 2021
Posts: 6

PostPosted: Thu Apr 15, 2021 9:58    Post subject: Reply with quote
Hello,

I'm back on this topic because I'd like to have ipv6 working!

My config :
Internet -> Freebox (router of my ISP) -> R7000 with ddwrt r46294

My R7000 is configured as next hop in my freebox settings


My ISP router see my ddwrt on IPV6

My ddwrt router has a public ipv6 and is accessible from the internet and it can ping ipv6 IP

My PC has a public ipv6 with the right suffix

But my computer ipv6 cannot ping my router or internet and my router cannot ping my PC

Do you have an idea of the problem please?

Thank you!
Regards
Jean-Paul



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Wildlion
DD-WRT Guru


Joined: 24 May 2016
Posts: 1407

PostPosted: Thu Apr 15, 2021 22:43    Post subject: Reply with quote
Try reading this post first:

https://forum.dd-wrt.com/phpBB2/viewtopic.php?p=1220511&sid=8793c662c0f524cf8fa81cc29c5a78fd

are you pinging the ipv6 address of the router or are you using the ipv6 link address?
jean-paul
DD-WRT Novice


Joined: 23 Jan 2021
Posts: 6

PostPosted: Fri Apr 16, 2021 18:32    Post subject: Reply with quote
Fantastic! Thank you, the route was missing... I thought is would have been added automatically Sad
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