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Smart Hub 7 Plus: IPv6 Router Advertisements not emitted after reboot

patters
Explorer

‎04-08-2026 02:54 PM - edited ‎04-08-2026 03:05 PM

Expected behaviour:

In IPv6 Stateless mode, the Hub should advertise the delegated LAN prefix using IPv6 Router Advertisements (RAs), allowing LAN devices to automatically configure global IPv6 addresses.

Observed behaviour:

The Hub shows:

  • IPv6 status: Enabled
  • IPv6 LAN prefix/address present

but does not emit Router Advertisements.

Packet capture on the NAS:

tcpdump -i eth0 -nn 'icmp6 and ip6[40] == 134'

shows no Router Advertisements.

The result is that LAN devices only have link-local addresses:

fe80::/10

(which are generated independently of RAs), but do not receive a globally routable IPv6 address.

A workaround I found:

  • Hub Manager → Advanced Settings → IPv6 → Configuration → Reset to default

Or if that doesn't make a change:

  • Toggle IPv6 allocation mode (for example Stateless → Off → Stateless)
  • Save/apply

After this, the Hub starts sending RAs again on a 1-9 minute interval and the NAS receives a global address, for example:

2a00:1234:5678:9abc:0211:32ff:fe2d:750f

However, after a reboot the Smart Hub will pick up new IPv6 addressing and will subsequently fail to emit any RAs.

 

Firmware version: r4.27.1-R-1862254-PROD-84001

App version: 3.14.5

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5 REPLIES 5
patters
Explorer

‎04-08-2026 03:22 PM - edited ‎04-08-2026 03:24 PM

I understand that ISP-supplied routers are not full featured, but when the TCP/IP stack doesn't even work properly: that's a major concern. I am paying to rent this equipment after all.

Please can a moderator forward this information to the appropriate people in EE. I would raise a support request, but there is no way to include this level of technical information and their remit is mainly resolving issues with basic connectivity.

0 Helpful
JimM11
Community Hero
Community Hero
In response to patters

‎04-08-2026 05:23 PM

@patters Have you done a Factory reset to the system since that EE Hub was last FW updated 4-6weeks ago yet?

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patters
Explorer

‎04-08-2026 06:12 PM - edited ‎04-08-2026 06:17 PM

@JimM11  Not yet - I saw there was a suggestion that might fix some of the IPv6 issues. But what kind of firmware change is that, that can't migrate an existing config!?

I'm away from home at the moment so it'll have to wait unfortunately.

I did run into this issue several months ago also, so I doubt this recent firmware was the start of it.

0 Helpful
JimM11
Community Hero
Community Hero
In response to patters

‎04-08-2026 06:17 PM

@patters No problems, just going to link the pinned post, and the list off FW updates currently, the 7 Plus still has a few oops on it currently so may take a little while to get there, all off the Hubs had DNS played with so expect the unexpected to say the least.

EE Hub firmware versions - The EE Community

Smart Hub 7 Plus
FW: r3.29.4-R-1511690-PROD-84001 and the gui is at App version 3.7.4 19/12/2025
FW: r3.35.15-R-1597208-PROD-84001 and the gui is at App version 3.11.2 19/12/2025
FW: r3.35.24-R-1648110-PROD-84001 and the gui is at App version 3.11.3 23/01/2026
FW: r4.27.1-R-1862254-PROD-84001 and the gui is at App version 3.14.5 13/07/2026

0 Helpful
JimM11
Community Hero
Community Hero
In response to patters

‎04-08-2026 10:41 PM

@patters Leave it with you, if the Factory Reset does work and hold it's own let the Forum know that fact, did see your other post as well on the pinholes, personally you just cannot trust the FW writers to get it right anytime and if they do not break it or cause issues further subsequent updates.

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