Determine when 6to4 adapter lost IPv6 address

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hello, have simple question have not been able find answer after researching past 2 weeks. fluent in ipv6 technologies can point me in right direction.

i trying find out when 6to4 adapter on 1 of our domain controllers no longer assigned ipv6 address.

ipconfig shows 6to4 tunnel adapter on domain controller no address assigned reason. i'd find out when happened. there specific log in event viewer can turn information, or way can enable auditing on change in future? reviewed logs related networking have not been able determine when or why happened.

the reason concerned because have member server directaccess role installed, , no longer authenticate our domain controllers. prevents clients establishing directaccess connection.

my theory directaccess server attempting reach domain controller no longer has 6to4 address using 6to4 transition technology.

any advice appreciated.

alex tester information technology assistant national automotive experts

hi alex,

thanks posting on technet forum.

>> is there specific log in event viewer can turn information, or way can enable auditing on change in future?

the following event logs used:

  • iphlpsvc operational event log

  • base-filtering-engine (bfe) connections operational log.

  • base-filtering-engine (bfe) resource flows operational log

  • winnat operational log

  • security event log

for more information, refer link below:

http://blogs.technet.com/b/martin_j_solis/archive/2015/03/20/additional-way-to-monitor-directaccess-machine-user-activity-on-windows-2012-and-2012r2-directaccess-with-component-even-logging.aspx

>>my theory directaccess server attempting reach domain controller no longer has 6to4 address using 6to4 transition technology.

clients establish ipsec tunnel ipv6 traffic directaccess server, acts gateway intranet.

directaccess client cannot establish tunnels directaccess server.

for more information, refer link below:

https://technet.microsoft.com/en-us/library/ee844114(v=ws.10).aspx

best regards,

andy_pan



Windows Server  >  IPAM, DHCP, DNS



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