Model :

Hardware Version :

Firmware Version :

ISP :

Hello,

I have a strange problem with my Archer C7:

H-Ver = Archer C7 v2 00000000 : S-Ver = 3.15.3 Build 180305 Rel.51282n

Topology is -> Internet -> Provider Modem -> Archer -> NAT -> 2 PCs

So, for some reason the Archer DHCPv6 either:
a) Gets an IPv6 config and but at some point loses it or
b) I cannot get an IPv6 address at all.

Here's what happens when I get an IPv6 address and then immediately lose it:

15	1st day 00:16:33	OTHER	NOTICE	Not prefix avail
14	1st day 00:16:33	OTHER	INFO	dhcp6c_ipc_data_rcv 89: wantype is 1, status is 6, cmd is 5, valid lifetime is 0, preferred lifetime is 0
13	1st day 00:16:27	OTHER	NOTICE	DNS1 = , DNS2 = , gateway = fe80::de53:7cff:fef4:a13
12	1st day 00:16:27	OTHER	NOTICE	Dhcpc succeed: The new IP = 2a02:1811:360d:3500:e367:47ac:f55d:f3a3, prefix = , dns1 = , dns2 = , gateway = fe80::de53:7cff:fef4:a13^M
11	1st day 00:16:27	OTHER	INFO	DHCP6C get gateway fe80::de53:7cff:fef4:a13 from ISP, RS sent count is 1.
10	1st day 00:16:25	OTHER	INFO	Send router solicitaion OK, trying to get default gateway.

Neither non-temporary and prefix fail. So does SLAAC. The strange thing is is that it's intermittent - sometimes IPv6 works fine, but all of a sudden I lose the address. No IPv6 problems from the Provider's Modem, and no issues whatsoever with IPv4.

It's possible, but I don't think it's a network problem. Any ideas...?

Thanks