IPV6 from ISP Router

Hi there,
I have an isp router with an ipv6 address.
My openwrt router is connected to it.

I need to get IPv6 to my devices.
How would I do the same?

If your ISP router does not hand out a Prefix (and it usually does not, but you can check on your openwrt router with ifstatus wan6) you can use IPv6 relay mode on your OpenWRT router:

1 Like

I have no wan6
Running ifstatus on interface fg which is a dhcpv6 client shows no prefix
what should i do?

First try adding this to your /etc/config/network

config interface 'wan6'
	option proto 'dhcpv6'
	option device '@wan'
	option reqaddress 'try'
	option reqprefix 'auto'

Restart your network by running /etc/init.d/network restart, wait ~30 seconds and check if you really don't have prefix delegated from your ISP.

    "ipv6-prefix": [

    "ipv6-prefix-assignment": [


Nothing, could my router(upstream one, isp provided, not openwrt) be hogging the prefix

Forget about OpenWrt for a while and focus on ISP provided router.

  • do you even need to keep using it?
  • what's its WAN interface media - copper, fiber, etc. ?
  • what's its WAN interface configuration - DHCP, PPPoE, etc. ?
  • what address(es) are assigned to its WAN interface?
  • what address(es) are assigned to its LAN interface?

Please try to answer using text, not pictures.

  1. Cant go through the hassle of buying one
  2. Fiber
  3. PPPoE
  4. 59.93.., (static ip requested by me), 2001:4490::108f:be62::fe9b:40c0/64 (it shows me that prefix 2001::4c1d:*::/64 is assigned to it)
  5. The 192.168.1 range

Couldnt i just bridge to this router so it assigns me an ip, if so how

See if you can switch it to a bridge mode.
So you don't have any IPv6 on LAN? Or you mean that 2001::4c1d:*::/64 prefix is assigned to LAN?

You misunderstood the question. Basing on your other response the right answer would be "Yes, because it is also an ONT and I cannot plug the ISP fiber directly to my OpenWrt router"

Do i switch eth0.2(WAN) to bridge in openwrt

Forget about OpenWrt for a while and focus on ISP provided router.

If you don't see any references to a bridge in the router GUI, google for "{device name} bridge mode"

Really sorry for doing this but i just realized that a few other things are connected to the isp router so i cant bridge it like that

Average ONT allows bridging to be configured on a per-service or per-VLAN basis, not for the whole device at once.

I am clueless on what you mean

This page allows you to switch the channel mode from PPPoE to bridged. People normally bridge such connection with a single LAN port where the downstream router is connected to.
Then you will need to configure PPPoE on your OpenWrt router but for that you need to know your PPPoE credentials (username and password).

Ik my PPPoE credentials, but if i do that some devices on that router will not work(house big -> separate routers on each floor)

Consider to configure OpenWrt as a dumb AP/switch.


Sure and then on the ISP router i DMZ my server

1 Like

Yes if you want to keep some of your network connected directly to the ISP router (wired or wifi), use it for all routing and set up your own routers as dumb AP.

This limits what you can do and you are trusting the ISP router alone for security, but otherwise you have to detach everything except the WAN port of your router from the ISP router and use it only as a link to the Internet.

Hopefully a DMZ will prevent any unexpected access :confused:
I have disabled TR069 because BSNL

This topic was automatically closed 10 days after the last reply. New replies are no longer allowed.