IPV6 Disconnected?

[rohitks]

@Ashbro - When I get IPv6 I know my clients have received GUA but many a times whatismyip shows IPv6 not detected at all. Still I can make inward connection using GUA to that client. So there indeed is public IP6. These sites are unreliable. What you can try is see if you can match the ip6 settings between zte and archer. that's what i had to do with D-Link router.

@su_mumbai - try disabling SLAAC in ip6 settings in WAN connection and check again.

 

[su_mumbai]

@rohitks What is SLAAC and what does disabling it in WAN IPv6 settings achieve?

 

[rohitks]

These are my WAN settings in zte for ip4/ip6. I have unchecked SLAAC and I get better ip6 now as compared to previous case where it was randomly working. your milage may vary. it's unlcear as of now if it's router or airtel but this worked the best in my case. give it a try. Go to WAN settings drop down wan tr69 internet connection and then this setting should be visible.
these are different ways of acquiring ip6 in this protocol. leaving only dhcp6 give me more reliable ipv6. nearly everytime i reboot the router
earlier in my case it was just like you 6 or 7 times out of 10.

 

[su_mumbai]

Thanks. I tried it.

The first time I disabled SLAAC, I got IPv6. However, the second time I enabled and disabled it, I didn't get IPv6. Funnily enough, the third time, I got IPv6 with SLAAC enabled.

At the moment, it just seems to be very random and requires trial and error. Maybe certain automatically assigned IP addresses have IPv6 capability and some others don't?

Hopefully someone with technical knowledge can shed light on this issue. Thank you.

 

[rohitks]

I do get Ip6 with SLAAC enabled as well! but probability of getting ip6 always i found more with that setting disabled at least at my end so i now have kept it that way always. You do not enable & disable it, just keep it disabled. ip6 is link local and global. what matters for us is global. link local is always there. This topic has been discussed a few times on this forum and the gen consensus is that as of now ip6 by airtel is experimental

 

[AltusRector]

I switched to Bridge Mode in Airtel a couple of days back. I tried both DHPCv6 as well as SLAAC. DHCPv6 is kind of hit and miss - some devices get global ipv6 address while some are stuck with only ipv4. Changing to SLAAC has solved the problem for now.

 

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[panks21]

IMO and understanding plain DHCPv6 wont work on Airtel. What has worked every time is SLAAC + PD. In my case Airtel router is in bridge mode.
Following is working config from Edgerouter which I was using few months ago
I am on static IP but, sometimes I try and experiment and it works every time.

set interfaces ethernet eth0 description 'Internet (PPPoE)'
set interfaces ethernet eth0 duplex auto
set interfaces ethernet eth0 pppoe 0 default-route auto
set interfaces ethernet eth0 pppoe 0 dhcpv6-pd pd 0 interface switch0.114 host-address '::1'
set interfaces ethernet eth0 pppoe 0 dhcpv6-pd pd 0 interface switch0.114 service slaac
set interfaces ethernet eth0 pppoe 0 dhcpv6-pd pd 0 prefix-length /64
set interfaces ethernet eth0 pppoe 0 dhcpv6-pd rapid-commit enable
set interfaces ethernet eth0 pppoe 0 firewall in ipv6-name WANv6_IN
set interfaces ethernet eth0 pppoe 0 firewall in name WAN_IN
set interfaces ethernet eth0 pppoe 0 firewall local ipv6-name WANv6_LOCAL
set interfaces ethernet eth0 pppoe 0 firewall local name WAN_LOCAL
set interfaces ethernet eth0 pppoe 0 ipv6 address autoconf
set interfaces ethernet eth0 pppoe 0 ipv6 dup-addr-detect-transmits 1
set interfaces ethernet eth0 pppoe 0 ipv6 enable
set interfaces ethernet eth0 pppoe 0 mtu 1492
set interfaces ethernet eth0 pppoe 0 name-server auto
set interfaces ethernet eth0 pppoe 0 password <password>
set interfaces ethernet eth0 pppoe 0 user-id <user-id>
set interfaces ethernet eth0 speed auto


set interfaces switch switch0 vif 114 address 192.168.114.254/25
set interfaces switch switch0 vif 114 description vlan114
set interfaces switch switch0 vif 114 ipv6 address autoconf
set interfaces switch switch0 vif 114 ipv6 dup-addr-detect-transmits 1
set interfaces switch switch0 vif 114 ipv6 router-advert cur-hop-limit 64
set interfaces switch switch0 vif 114 ipv6 router-advert link-mtu 0
set interfaces switch switch0 vif 114 ipv6 router-advert managed-flag false
set interfaces switch switch0 vif 114 ipv6 router-advert max-interval 600
set interfaces switch switch0 vif 114 ipv6 router-advert other-config-flag false
set interfaces switch switch0 vif 114 ipv6 router-advert prefix '::/64' autonomous-flag true
set interfaces switch switch0 vif 114 ipv6 router-advert prefix '::/64' on-link-flag true
set interfaces switch switch0 vif 114 ipv6 router-advert prefix '::/64' valid-lifetime 2592000
set interfaces switch switch0 vif 114 ipv6 router-advert reachable-time 0
set interfaces switch switch0 vif 114 ipv6 router-advert retrans-timer 0
set interfaces switch switch0 vif 114 ipv6 router-advert send-advert true
set interfaces switch switch0 vif 114 mtu 1500

 

[81163]

@panks21 ipv6 working with static ip ?

 

[panks21]

@awemonk
No it doesnt work with static IP. It works when I use PPPoE on my connection

 

[81163]

hmm same here ...