Mailing List Archive: LinkedIn IPv6 issues

Hi,

I'm seeing this strange issue where LinkedIn is not working properly via
IPv6.
At least 2620:109:c007:102::5be1:f881 is not working in several eyeball
networks in Germany, 2620:109:c006:102::6cae:281 is working, but not
returned often via DNS lookup.
Also the DNS RR entries change often so I can not really pinpoint what
customer got which IP address back that didn't work.

Is this a known issue? I'm seeing it for about 2-3 days already.

Best,
Dominik

$ host www.linkedin.com
www.linkedin.com is an alias for pop-ela4-alpha.www.linkedin.com.
pop-ela4-alpha.www.linkedin.com has address 199.101.163.129
pop-ela4-alpha.www.linkedin.com has IPv6 address
2620:109:c00d:100::c765:a381

$ telnet www.linkedin.com 80
Trying 2620:109:c006:102::6cae:281...
Connected to www.linkedin.com.
Escape character is '^]'.
^]
telnet> quit
Connection closed.

$ host glb-eu.www.linkedin.com
glb-eu.www.linkedin.com is an alias for pop-idb2-alpha.www.linkedin.com.
pop-idb2-alpha.www.linkedin.com has address 91.225.248.129
pop-idb2-alpha.www.linkedin.com has IPv6 address
2620:109:c007:102::5be1:f881

$ telnet glb-eu.www.linkedin.com 80
Trying 2620:109:c007:102::5be1:f881...
Trying 91.225.248.129...
Connected to glb-eu.www.linkedin.com.
Escape character is '^]'.
^]
telnet> quit
Connection closed.

Dominik,

Follow the records for www.linkedin.com. LinkedIn uses GLB DNS resolution
off of www and since glb-eu isn't working for you, that means they probably
are not using that right now.

-Grant

On Sat, Oct 4, 2014 at 12:50 PM, Dominik Bay <db@rrbone.net> wrote:

> Hi,
>
> I'm seeing this strange issue where LinkedIn is not working properly via
> IPv6.
> At least 2620:109:c007:102::5be1:f881 is not working in several eyeball
> networks in Germany, 2620:109:c006:102::6cae:281 is working, but not
> returned often via DNS lookup.
> Also the DNS RR entries change often so I can not really pinpoint what
> customer got which IP address back that didn't work.
>
> Is this a known issue? I'm seeing it for about 2-3 days already.
>
> Best,
> Dominik
>
>
>
> $ host www.linkedin.com
> www.linkedin.com is an alias for pop-ela4-alpha.www.linkedin.com.
> pop-ela4-alpha.www.linkedin.com has address 199.101.163.129
> pop-ela4-alpha.www.linkedin.com has IPv6 address
> 2620:109:c00d:100::c765:a381
>
> $ telnet www.linkedin.com 80
> Trying 2620:109:c006:102::6cae:281...
> Connected to www.linkedin.com.
> Escape character is '^]'.
> ^]
> telnet> quit
> Connection closed.
>
>
> $ host glb-eu.www.linkedin.com
> glb-eu.www.linkedin.com is an alias for pop-idb2-alpha.www.linkedin.com.
> pop-idb2-alpha.www.linkedin.com has address 91.225.248.129
> pop-idb2-alpha.www.linkedin.com has IPv6 address
> 2620:109:c007:102::5be1:f881
>
> $ telnet glb-eu.www.linkedin.com 80
> Trying 2620:109:c007:102::5be1:f881...
> Trying 91.225.248.129...
> Connected to glb-eu.www.linkedin.com.
> Escape character is '^]'.
> ^]
> telnet> quit
> Connection closed.
>