IPv6 on a TP-Link ER605 router

[#1]

Ok, I seem to have this working - to an extent with the following settings...

However as soon as the router connects, I seem to get the following entry into system log at 1 or 2 second intervals 

Is this normal?

If, as I suspect not, do you think it is due to my settings or a "feature" of the ER605?

Ian

[#2]

@IMM 

Is this normal?

No, looks like its constantly trying to renew the connection.

Looking at the manual , for the 'Get IPv6 address' does selecting SLAAC + Stateless DHCP make any difference , or even AUTO ?

I'm actually using an ER605 myself, The hardware is good but I'm afraid I gave up on TPLink firmware some time ago  and flashed it with native Openwrt.  It obviously doesnt work with the Omada controller and is a one-way trip, there's no going back to the factory firmware. Quite a steep learning curve as well...

[#3]

@MisterW for the 'Get IPv6 address' does selecting SLAAC + Stateless DHCP make any difference.

If I use that, the "IPv6 address" field remains as :: and the Lans only have link local addresses.

If I use Auto, I seem to get the same result as using DHCPv6

[#4]

@IMM that's sort of what I expected but it was worth a try. AIUI it should be using DHCPv6 to get an IPv6 prefix.

If you look at my Openwrt configuation for the IPv6 WAN interface below

Its set as a DHCPv6 client and uses the existing PPPoE tunnel (@wan) to communicate. I assume in your case thats the 'Use same PPPoE connection as IPv4'

It definitely shouldn't be logging a connect attempt evry 2 seconds! I'd suggest posting on the TpLink business forums to see if anyone has any ideas https://community.tp-link.com/en/business/forum/794?page=1

Moderator's note by Mike (Mav): Personal information removed from a public forum.

[#5]

@IMM there's another report of the same logs here https://community.tp-link.com/en/business/forum/topic/267282 . However that was with an ER605 V1 with early firmware. I assume yours is a V2 and are you on the latest firmware ?

The latest relaesed seems to be 2.2.6 https://support.omadanetworks.com/uk/product/er605/?resourceType=download

although there is a 2.3.0 pre-release today!! https://community.tp-link.com/en/business/forum/topic/255644

[#6]

Yes, V2.0 hardware and latest 2.2.6 Build 20240718 Rel.82712 firmware.

I've downloaded the 2.3.0 release but I'm not sure I'm brave enough to install it - I think I may wait until it appears on the official release list and then give it a go. 

[#7]

There's nothing obvious in the release notes but they are a bit brief. The 'virtual wan MIGHT be related but it's a bit vague! 

[#8]

My ER7206 also shows a link local address and when connected stops internet access

[#9]

@zpeterk

My ER7206 also shows a link local address and when connected stops internet access

So it doesnt allocate IPv6 addresses to LAN clients ?

does your ER7206 show the continuous logs ?

[#10]

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@MisterW wrote:

@zpeterk

My ER7206 also shows a link local address and when connected stops internet access

So it doesnt allocate IPv6 addresses to LAN clients ?

does your ER7206 show the continuous logs ?

I have not tried it on the lan side as the IPv6 addresses are being alocated from a different wan

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[#11]

So my ER7206 is doing the same. The clients are getting addresses OK

[#12]

@zpeterk it doesnt surprise me, I would guess the firmware for both the ER7206 & the ER605 are from the the same underlying base.

I suggest bot you and @IMM post on the TP Link business forum and see if there's any explanation.

[#13]

Just to add my other IPv6 wan connection isn't filling the log.

It would appear the router can't cope with two IPv6 wans as the PD has to be specified in the lan settings and therefore can't fall back to the other wan in the event of failure.

I have been to the TP Link forum before and got no joy at all!

[#14]

There's another old thread on the Tplink forums reporting the IPv6 repeated connection attempts

https://community.tp-link.com/en/business/forum/topic/252854?sortDir=ASC&page=1

[#15]

@IMM 

Have you set any ACL rules to get it to work?