ipv6 address allocated. But cant access ipv6

[ifru]

I have been getting ipv6 for few months and yesterday onwards, I cant access ipv6 even though an ipv6 address is allocated for me in my Openwrt router in bridge mode. What may be the issue?

 

[JB701]

Can you do a traceroute to Google on Ipv6?

 

[ifru]

here is the traceroute

 

[JB701]

2001:4490:3fbc::24 looks like the ISP Gateway from the latency , so the packet is reaching from your router to BSNL's fine. It's likely an issue on BSNL side rather than yours especially considering it was working for you till recently.

I can't ping 2001:4490:3fbc::24 from my IPv6 server located outside BSNL Network (neither UDP,TCP nor ICMP work).

 Host                                                                        Loss%   Snt   Last   Avg  Best  Wrst StDev
1. 2001:1af8:                                                                0.0%    22    0.7   0.7   0.5   0.9   0.1
2. 2001:1af8:4700                                                            0.0%    22    1.6   1.2   0.3   4.2   0.9
3. adm-b3-link.telia.net                                                     0.0%    22    0.4   1.4   0.4  12.9   2.9
4. adm-bb3-v6.telia.net                                                      0.0%    22    9.5   9.6   9.4   9.8   0.1
5. ldn-bb3-v6.telia.net                                                      0.0%    22    7.8   8.2   7.8  10.0   0.5
6. ldn-b7-v6.telia.net                                                       0.0%    22    8.3  10.3   7.8  34.0   6.6
7. bharti-ic-311640-ldn-b7.c.telia.net                                       0.0%    22  229.3 225.1 219.8 239.4   6.1
8. ???

 

[ifru]

Anybody else on BSNL facing the issue?

 

[Smh]

2001:4490:3fbc::24 looks like the ISP Gateway from the latency , so the packet is reaching from your router to BSNL's fine. It's likely an issue on BSNL side rather than yours especially considering it was working for you till recently.

I can't ping 2001:4490:3fbc::24 from my IPv6 server located outside BSNL Network (neither UDP,TCP nor ICMP work).

 Host                                                                        Loss%   Snt   Last   Avg  Best  Wrst StDev
1. 2001:1af8:                                                                0.0%    22    0.7   0.7   0.5   0.9   0.1
2. 2001:1af8:4700                                                            0.0%    22    1.6   1.2   0.3   4.2   0.9
3. adm-b3-link.telia.net                                                     0.0%    22    0.4   1.4   0.4  12.9   2.9
4. adm-bb3-v6.telia.net                                                      0.0%    22    9.5   9.6   9.4   9.8   0.1
5. ldn-bb3-v6.telia.net                                                      0.0%    22    7.8   8.2   7.8  10.0   0.5
6. ldn-b7-v6.telia.net                                                       0.0%    22    8.3  10.3   7.8  34.0   6.6
7. bharti-ic-311640-ldn-b7.c.telia.net                                       0.0%    22  229.3 225.1 219.8 239.4   6.1
8. ???

That ip is not reachable from any network including bsnl

RIPE Atlas - RIPE Network Coordination Centre

RIPE Atlas is the RIPE NCC's main Internet data measurement system.

atlas.ripe.net

RIPE Atlas - RIPE Network Coordination Centre

RIPE Atlas is the RIPE NCC's main Internet data measurement system.

atlas.ripe.net

RIPE Atlas - RIPE Network Coordination Centre

RIPE Atlas is the RIPE NCC's main Internet data measurement system.

atlas.ripe.net

But one BSNL probe could ping ipv6 google.com its hosted in some education institute so - RIPE Atlas

 

[gkarthik]

same even latency over IPv4 is around 400ms so not sure what is going on

 

[varkey]

IPv6 is dead for me as well since several hours, not sure when exactly it stopped working though, but sometime today.

➜ mtr -6 -w google.com
Start: 2020-07-18T23:32:01+0530
HOST: varkey                  Loss%   Snt   Last   Avg  Best  Wrst StDev
  1.|-- 2001:4490:4e4d:bc2e::1  0.0%    10    2.0   1.9   1.5   2.2   0.2
  2.|-- 2001:4490:4e4c::1       0.0%    10    4.2   4.6   2.8  10.8   2.3
  3.|-- 2001:4490:3dfc::82      0.0%    10    4.4   4.3   3.6   5.1   0.5
  4.|-- ???                    100.0    10    0.0   0.0   0.0   0.0   0.0

 

[JB701]

That ip is not reachable from any network including bsnl

RIPE Atlas - RIPE Network Coordination Centre

RIPE Atlas is the RIPE NCC's main Internet data measurement system.

atlas.ripe.net

RIPE Atlas - RIPE Network Coordination Centre

RIPE Atlas is the RIPE NCC's main Internet data measurement system.

atlas.ripe.net

RIPE Atlas - RIPE Network Coordination Centre

RIPE Atlas is the RIPE NCC's main Internet data measurement system.

atlas.ripe.net

But one BSNL probe could ping ipv6 google.com its hosted in some education institute so - RIPE Atlas

I keep forgetting to use Atlas for this stuff lol.

@varkey I'm curious why the fe80:: address is showing up on OP's traceroute but not yours.

 

[varkey]

@JB700 Was wondering the same. Ideally, each device gets a public IPv6 address, and it should not show the link local IP address. Perhaps a difference in configuration?

In the trace I shared, the first hop, is the public IPv6 address of my router.