On Tue, 21 Jul 2015 13:31:33 +0200 Jen Linkova <furry13@gmail.com> wrote:
On Tue, Jul 21, 2015 at 12:33 PM, Roman Mamedov <rm@romanrm.net> wrote:
On Tue, 21 Jul 2015 09:37:13 +0000 "Abreu, Alexandre, Vodafone Portugal" <alexandre.abreu@vodafone.com> wrote:
Based on your feedback I've built a probe with the IP address instead of the hostname and I now get "normal" results. There's something weird about the DNS resolution that is leading to these results.
Read about: https://peering.google.com/about/ggc.html
Your probe may have resolved ipv6.google.com to the IP of your ISP's Google Global Cache mirror, hence the very low ping.
Does not look like that as the address is 2a00:1450:4003:806::200e which is Google VIP in Europe.
From the original message:
I've setup a ping probe (ID#2143865) to ipv6.google.com and it's consistently giving 1msec RTT RTT I get on the CPE the probe is connected to 0 2a00:1450:4003:806::200e 56 59 12ms echo reply
My guess is that maybe the probe was set up to use a different DNS resolver than the CPE, and it got a different IPv6 instead of 2a00:1450:4003:806::200e. -- With respect, Roman