I'm hoping someone might be able to help me. I'm trying to setup IPv6 on a CR50iNG running Sophos OS 17.0.6 MR-6. This sits behind a managed Cisco router that the ISP looks after.
IPv6 below have been changed from their real 2001:4d48:x:x values.
My ISP has reserved a /48 prefix. e.g 1111:2222:3333::/48. They have configured 1111:2222:3333::1/64 on the LAN port of the Cisco. They do not use DHCPv6 for IP assignment. To quote the email I had from my ISP: "If you need any more addresses out of the /48 then you need to let us know where to route them to."
On the Cyberoam I have configured on the WAN port:
IP Assignment: Static
IPv6/Prefix: 1111:2222:3333::2/64
Gateway IP: 1111:2222:3333::1/64
The gateway is appearing as green in the WAN link manager. I can ping websites via IPv6 using the diagnostic tools of the Cyberoam.
My issue is I don't have IPv6 connectivity from any of my PCs sitting behind the Cyberoam.
I have configured IPv6 router advertisement using the 1111:2222:3333::/64 range and also tried a different subnet 1111:2222:3333:1::
Windows PCs are picking up an IPv6 address, temporary address and a link local address.
They are picking up a gateway address for the Cyberoam but it is a link local address starting with fe80.
I can ping the link local address and the IPv6 address I've assigned to the LAN port on the Cyberoam ok. I cannot ping out to any websites.
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