Airtel IPv6 issues on Asus router bridged mode

[MarioBros]

Hey All,

My Airtel broadband ONT is connected to Asus router via bridged mode (PPPoE dialing) IP is CGNAT.

I tried enabling IPv6 via Asus router as seen in the below screenshot, from what I notice IPv6 gets activated, (even online IPv6 test shows it working) but the speed and connectivity is very inconsistent and slow, speed test shows just 10 mpbs once IPv6 is enabled and goes back to normal 200mbps once disabled.

what am I doing wrong ?

 

[guest_999]

Always use passthrough option first. Also, as per my experience ISPs typically use different routing for IPv6 & IPv4 which may result in speed difference between the two so if after trying everything the speeds are still poor on IPv6 then it is just poor implementation of IPv6 by ISP.

 

[MarioBros]

Always use passthrough option first. Also, as per my experience ISPs typically use different routing for IPv6 & IPv4 which may result in speed difference between the two so if after trying everything the speeds are still poor on IPv6 then it is just poor implementation of IPv6 by ISP.

I used passthrough option but IPv6 does not get activated...

only on Native option IPv6 works, I tried adding Google DNS, it works fine on for devices like phones but on other devices its very inconsistent and low speed

 

[guest_999]

Open command prompt & run tracert command to a foreign ipv6 server like this:

tracert news6.easynews.com

Compare the routes & ping times of above with ipv4 connection using this command below in ipv4 connection mode after disabling ipv6 in router.

tracert news.easynews.com

 

[MarioBros]

Open command prompt & run tracert command to a foreign ipv6 server like this:

tracert news6.easynews.com

Compare the routes & ping times of above with ipv4 connection using this command below in ipv4 connection mode after disabling ipv6 in router.

tracert news.easynews.com

checked this, the result was almost identical with IPv6 on & off, infact ping times a little better on IPv6 when I ran the test again
routes were also same, the speed while accessing is very inconsistent and slow on Browser with IPv6 enabled..



Speedtest error

only IPv4

C:\Users\Deepak>tracert news.easynews.com

Tracing route to news.eu.easynews.com [81.171.92.197]
over a maximum of 30 hops:

  1     2 ms    <1 ms    <1 ms  RT-AX1800HP [192.168.1.1]
  2     4 ms     5 ms     7 ms  10.240.9.208
  3     *        *        *     Request timed out.
  4     4 ms     4 ms     4 ms  125.18.215.61
  5     *      118 ms   119 ms  116.119.73.117
  6   142 ms   142 ms   144 ms  as57463.226.199.netix.net [185.1.226.199]
  7   144 ms   148 ms   142 ms  speed-ix.baseip.com [185.1.222.241]
  8   141 ms   142 ms   144 ms  185.90.199.109
  9   144 ms   146 ms   143 ms  81.171.92.197

Trace complete.

----------------------

with IPv6 enabled

Tracing route to news.eu.easynews.com [81.171.92.197]
over a maximum of 30 hops:

  1     1 ms    <1 ms     1 ms  RT-AX1800HP [192.168.1.1]
  2     4 ms     4 ms     4 ms  10.240.9.208
  3     *        *        *     Request timed out.
  4     4 ms     4 ms     4 ms  125.18.215.57
  5   126 ms   126 ms   127 ms  116.119.57.82
  6   139 ms   143 ms   141 ms  as57463.226.199.netix.net [185.1.226.199]
  7   140 ms   140 ms   140 ms  speed-ix.baseip.com [185.1.222.241]
  8   141 ms   143 ms   141 ms  185.90.199.107
  9   142 ms   142 ms   142 ms  81.171.92.197

 

[guest_999]

Test your speeds here:

Network Tools

Use our network tool suite to assess your connection to our network

ultra.cc

 

[anmolbhard004]

checked this, the result was almost identical with IPv6 on & off, infact ping times a little better on IPv6 when I ran the test again
routes were also same, the speed while accessing is very inconsistent and slow on Browser with IPv6 enabled..



Speedtest error

only IPv4

C:\Users\Deepak>tracert news.easynews.com

Tracing route to news.eu.easynews.com [81.171.92.197]
over a maximum of 30 hops:

  1     2 ms    <1 ms    <1 ms  RT-AX1800HP [192.168.1.1]
  2     4 ms     5 ms     7 ms  10.240.9.208
  3     *        *        *     Request timed out.
  4     4 ms     4 ms     4 ms  125.18.215.61
  5     *      118 ms   119 ms  116.119.73.117
  6   142 ms   142 ms   144 ms  as57463.226.199.netix.net [185.1.226.199]
  7   144 ms   148 ms   142 ms  speed-ix.baseip.com [185.1.222.241]
  8   141 ms   142 ms   144 ms  185.90.199.109
  9   144 ms   146 ms   143 ms  81.171.92.197

Trace complete.

----------------------

with IPv6 enabled

Tracing route to news.eu.easynews.com [81.171.92.197]
over a maximum of 30 hops:

  1     1 ms    <1 ms     1 ms  RT-AX1800HP [192.168.1.1]
  2     4 ms     4 ms     4 ms  10.240.9.208
  3     *        *        *     Request timed out.
  4     4 ms     4 ms     4 ms  125.18.215.57
  5   126 ms   126 ms   127 ms  116.119.57.82
  6   139 ms   143 ms   141 ms  as57463.226.199.netix.net [185.1.226.199]
  7   140 ms   140 ms   140 ms  speed-ix.baseip.com [185.1.222.241]
  8   141 ms   143 ms   141 ms  185.90.199.107
  9   142 ms   142 ms   142 ms  81.171.92.197

working perfectly fine here maybe try another dns server see if helps

https://ultra.cc/network-tools/speedtest/be4f7b02-eae5-4902-a66c-ff9acb907855

 

[MarioBros]

View attachment 204753
working perfectly fine here maybe try another dns server see if helps
View attachment 204754

unfortunately, on the Asus router no such DHCPv6 option to enable, I tried Cloudflare dns which is also the same

which router is this by the way ?

Test your speeds here:

Network Tools

Use our network tool suite to assess your connection to our network

ultra.cc

IPv4 only

https://ultra.cc/network-tools/speedtest/84b08ced-2815-416a-8149-2b929800271a

with IPv6

https://ultra.cc/network-tools/speedtest/08840965-2c4a-4dd9-bed6-baecb3f0ad08

Fast.com speed result with IPv6 enabled

 

[guest_999]

https://ultra.cc/network-tools/speedtest/be4f7b02-eae5-4902-a66c-ff9acb907855

Download is alright assuming it is 300mbps connection but upload is quite low. It should be at least 150mbps in my opinion or is airtel also doing the old time thing of restricting upload speed nowadays.

IPv4 only
https://ultra.cc/network-tools/speedtest/84b08ced-2815-416a-8149-2b929800271a

with IPv6
https://ultra.cc/network-tools/speedtest/08840965-2c4a-4dd9-bed6-baecb3f0ad08

Those results are similar so I am guessing it is somehow some bad routing at airtel's end for IPv6 in your area affecting some websites. Don't just rely on speedtests though, always use/browse typical websites you use to see the speeds.

unfortunately, on the Asus router no such DHCPv6 option to enable

Native ipv6 is DHCPv6.

 

[anmolbhard004]

which router is this by the way ?

dream machine pro

Download is alright assuming it is 300mbps connection but upload is quite low. It should be at least 150mbps in my opinion or is airtel also doing the old time thing of restricting upload speed nowadays.

its a 200 mbps connection , upload is always like this on airtel nothing will fix it sadly

even on its own server in speedest ookla it wont touch 200 in upload

@MarioBros complain at CPGRAMS portal against portal and they will solve it in a day some routing has gone bad at your area olt I assume .

 

[MarioBros]

ok let me check CPGRAMS

meanwhile should I check IPv6 directly on my ONT router disconnecting Asus router ?

 

[anmolbhard004]

ok let me check CPGRAMS

meanwhile should I check IPv6 directly on my ONT router disconnecting Asus router ?

yes check on ont once

 

[guest_999]

its a 200 mbps connection , upload is always like this on airtel nothing will fix it sadly

That's bad, but @MarioBros got much better upload speed on same ultra speedtest.