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IPv6 addressing in statefull mode

Hi to the one who will read ;),

We encounter an annoying issue when using DHCPv6 on a ASG 220 - 9.315-2.

Clients devices receive an ip address in the range configured, but we can't reach anything on the same subnet and obviously on the outside (WAN or other VLAN). We can ping the link-local address of the gateway, but not more.

When we use manual settings, everything's ok. We can ping public DNS and all IPv6 configured devices on the network.

Do you have any idea on how to fix this issue. Switching in stateless mode not being an option for now :)

Is there any option to set up as next-hop or anything else ?

Thank you for your help... i'm trying not to lose my 8 remaining hairs...

Regards

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Scott_Klassen over 8 years ago

How is the gateway configured manual vs. DHCPv6 and also IPv6 enabled DNS server that is used.

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philippehector over 8 years ago in reply to Scott_Klassen

Hi,
That's the point, i don't find any way to specify the gateway address when using the dhcpv6. It automatically announce the gateway link-local, not its ip address. But by the way, with this address, they should be able to communicate, and they don't. Or there's something i'm missing.

To answer you clearly:
- manual mode: I use the gateway interface private address (fd::10:4:2:ff/120 for instance)
- in dhcpv6: no gateway option
- IPv6 DNS server is the ASG

Thank you
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scorpionking over 8 years ago in reply to philippehector
Did you also create a prefix advertisement for this subnet with flag "Managed (stateful)" set?

DHCPv6 standard doesn't contain a gateway definition, it is handled by the prefix advertisement.
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philippehector over 8 years ago in reply to scorpionking

Yes i did.
It seems some routes are missing but it should not affect the communication with the gateway :/
The interfaces of the testing server are bridged, could it be a problem ?
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