IPv6 setup on your router behind JIO router

Hi,

I read in other posts that IPv6 on the JIO router is accessible from outside the network. I'm interested to workout a setting on my own router (ER-X) which is connected to JIO router so that my machines get IPv6 PD addresses. I tried few setting but it did not work. If anyone has managed to set their routers (any model) behind JIO router, can pls share their settings, I can then replicate the same on the ER-X.

On the JIO router I get:
WAN: 2405:201:yy:xx:zz:aa:bb:1fba/128
LAN: 2405:201:yy:aa::bb:1d01/64
2405:201:yy:bb:xx:yy:zz:1198/64

thanks,

Is JioFiber WAN IPv6 public? When I go to sites like whatsmyip, it shows a different IPv6 address than the WAN IPv6 in Jio router. Am I missing something?

@PawanKumar In IPv6, each device gets its own public IP. The one you see in jio's modem is it's own ipv6 address and the address you see in websites like whatsmyip is your device's public IP address.

Will need more details. Is your ER-X getting a ipv6 address (it should if it is directly connected to the jio router as a device), can you access/ping/dig ipv6 based services from the ER-X cmdline? and what all have you tried?

EDIT: Does the jio router support DHCPv6, if not your ER-X will only get a single IPv6 address and won't get the /64 subnet assigned to it.

@achaudhary997 The JIO router has IPv6 IPs and seems to support it. But what I'm reading is that you need atleast /60 prefix so that you can use DHCP PD. I tried below config which does not fetch any Ipv6 on any of the interfaces:

set interfaces ethernet eth1 dhcpv6-pd pd 0
set interfaces ethernet eth1 dhcpv6-pd pd 0 prefix-length 60
set interfaces ethernet eth1 dhcpv6-pd rapid-commit enable
set interfaces ethernet eth1 dhcpv6-pd pd 0 interface switch0.1
set interfaces ethernet eth1 dhcpv6-pd pd 0 interface switch0.1 host-address ::1
set interfaces ethernet eth1 dhcpv6-pd pd 0 interface switch0.1 prefix-id :1
set interfaces ethernet eth1 dhcpv6-pd pd 0 interface switch0.1 service slaac
set interfaces switch switch0 vif 1 ipv6 router-advert prefix ::/64
set interfaces switch switch0 vif 1 ipv6 router-advert managed-flag true

When changing line 2 to 64 prefix, the router is not letting me commit changes and gives below error:

ER-X prefix-id must be less than :: for prefix /64

The error is at the line with prefix-id, try removing : (colon) and just keeping the integer.

If I'm not mistaken - the router itself has a /64, and so it can assign IPs to other devices connected to it directly, but cannot provision another /64 to your 2nd router - and have devices connected to it receive individual public IPv6.

Effectively - it thinks your router is the target device. I am also looking for a solution to this, currently my pfSense box has a /64 IPv6 assigned, and I am trying to see if I can make this split or served across different devices connected to it.

Nitin said:

@PawanKumar In IPv6, each device gets its own public IP. The one you see in jio's modem is it's own ipv6 address and the address you see in websites like whatsmyip is your device's public IP address.

Click to expand...

Oh.. got it. Thanks! This is the 1st time I’m dealing with IPv6 lol

achaudhary997 said:

The error is at the line with prefix-id, try removing : (colon) and just keeping the integer.

Click to expand...

This gave another error:

ubnt@HomeUbnt# set interfaces switch switch0 vif 1 ipv6 router-advert prefix /64
"/64" is not a valid value of type "ipv6net"
Value validation failed
Set failed

Not sure what that is as I am trying to help you blindly as of now.
Another issue that you will run into is that the jio router will be giving out IP addresses via slaac (this is a guess as this is what most consumer routers do) and not dhcpv6, so it won't be replying properly to the erx requests.

@achaudhary997 It's dhcpv6

How are you guys getting ipv6 , mine only shows ipv4 even though router is on both mode.

@Xecuter - are you checking on PC or Router?
It's possible on your PC IPv6 is disabled. If PC, try this: https://www.tenforums.com/tutorials/90033-enable-disable-ipv6-windows.html

Ohh I just checked on phone and it showed up , must be pc issue

I am facing the exact same issue.

I am using JioFi 2 which is in a pass throgh to pfSense VM via proxmox.

The pfSense VM can get a IPv6 address and it's also accessible from the internet. But the lan network behind the firewall can't grab the IP directly from the ISP via the Jiofi router.

I've heard it's mainly because the jiofi router is in gateway mode, but actually it should be in Bridged mode to work.

But no idea if we could change the modes of the jiofi router, don't think that's possible either.