Support Forum
The Forums are a place to find answers on a range of Fortinet products from peers and product experts.
ted_barker
New Contributor

IPv6 DHCP on wan1 interface not working? How to fix this?

Hi,

 

I have an ISP that has a rd6 /60, but when I look at the router advertisements I see it announces a prefix /64.

 

All my client machines, MAC, Windows and Linux all work perfectly fine with the IPv6 addresses within that prefix and have 2 IP addresses (temporary and regular).

 

My goal would have been:

 

1) WAN1 interface should accept the router advertisement and assign itself (SLAAC) an IPv6 address.

 

I cannot get this to work.

 

I tried to use mode dhcp and used also some other settings, but it never accepted an IPv6 with that prefix. Rebooting after the changes also did not work.

 

If I manually assign an IPv6 address and route, IPv6 works fine. 

 

What am I doing wrong?

 

 

2) I should be able to allow other ports to use the same IPv6 prefix, but going through Fortigate.

 

The option I saw is someting like a ND proxy?

What other options are there?

 

 

 

 

2 REPLIES 2
emnoc
Esteemed Contributor III

Have you looked at IPV6-Delegation?

 

https://help.fortinet.com/fos50hlp/54/Content/FortiOS/fortigate-whats-new-54/FeatureCatalog-ipv6.htm

 

Ken Felix

PCNSE 

NSE 

StrongSwan  

PCNSE NSE StrongSwan
ted_barker

Hi Ken,

 

emnoc wrote:

Have you looked at IPV6-Delegation?

 

https://help.fortinet.com/fos50hlp/54/Content/FortiOS/fortigate-whats-new-54/FeatureCatalog-ipv6.htm

 

 

Yes, but I stopped short after reading:

 

Downstream IPv6 interfaces can receive address assignments on delegated subnets from a DHCP server that serves an upstream interface.

 

1) My first problem is that I would like to have the WAN1 pick up the IPv6 provided by the RA.

 

2) My ISP does use SLAAC (RA) and no DHCPv6

 

 Yes, I have had enabled the setting:

set dhcp6-prefix-delegation enable

 

Announcements

Select Forum Responses to become Knowledge Articles!

Select the “Nominate to Knowledge Base” button to recommend a forum post to become a knowledge article.

Labels
Top Kudoed Authors