LinkedIn IPv6 issues

Dominik Bay db at rrbone.net
Sat Oct 4 21:50:24 CEST 2014


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.



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