10 Apr
2016
10 Apr
'16
10:50 a.m.
* maxtul@netassist.ua (Max Tulyev) [Sun 10 Apr 2016, 15:30 CEST]:
I need to stop IPv6 web traffic going from our customers to Google without touching all other IPv6 and without blackhole IPv6 Google network (this case my customers are complaining on long timeouts).
What can you advice for that?
You can add a reject route at your borders rather than nullroute. That will cause ICMP Unreachables to be sent by your routers back to your customers so their applications will know immediately to retry using IPv4 rather than waiting for TCP timeouts. Alternatively, you could ask Google to exempt your nameservers from being responded to with AAAA records - something that may happen automatically if v6 connectivity is bad. -- Niels.