IPv6 on GL-B1300 does not work

bullza · 2022-04-08T04:08:29.038Z

My modem allocates a /128 IPv6 address to the WAN interface.

I also see a /64 prefix under Luci for my LAN interface. This is consistent with what my ISP does: https://www.reddit.com/r/Ubiquiti/comments/i2j7zw/ipv6_on_comcastxfinity_unifi_dream_machine/

I have enabled “Native” IPv6 on the settings page. But none of my devices can ping an IPv6 address. I don’t see any IPv6 connectivity on https://ipv6-test.com/ either.

ipv6_does_not_work778×889 68 KB

ipconfig / ifconfig / ip addr commands on any of the devices don’t show any IP address with 2601: prefix.

Any idea what I can do?

bullza · 2022-04-08T04:46:35.748Z

Note: NAT6 works.

Screen Shot 2022-04-08 at 12.46.07 AM1458×1280 85.1 KB

bullza · 2022-04-08T06:38:23.841Z

Internet started lagging again like it used to with previous firmwares.

Only difference is that it took a few hours before it did.

Some websites were working fine but then I could not upload files on some websites.

Turned off IPv6 and everything is good again.

When can we have stable IPv6 on B1300? Please?

For reference, I am on firmware 3.211, which is the latest stable firmware.

bullza · 2022-04-08T14:42:26.241Z

Further update, looks like only websites on IPv6 lag.

Websites that only have IPv4 work okay.

I confirmed this by adding and removing an AAAA record (for IPv6) for my domain while having IPv6 turned enabled on the router.

This is true for all websites. I can’t upload attachments to Gmail and Telegram for example.

hansome · 2022-04-08T15:03:03.388Z

Please try this command to stop NAT acceleration module:

/etc/init.d/qca-nss-ecm stop
/etc/init.d/qca-nss-ecm disable

check if lagging disappear.

bullza · 2022-04-08T16:19:49.990Z

Thank you, @hansome. Looks like the lagging disappeared. I will report again tomorrow, however.