Google is aware this has recurred over the last 3 days and we are digging into it. If you happen to have crisper start-stop times than ~09:20-09:50 EST for any of the last three days, that might well help us narrow it down. Thanks to those who have come via noc@google.com (our master ticket: b/176930179). Phil Sykes (day job: Google Networking SRE) On Wed, Jan 6, 2021 at 2:55 PM mike tancsa via Outages <outages@outages.org> wrote:
Seems to be sporadic. When trying to resolve via ns2.google.com which I see as
% host ns2.google.com. ns2.google.com has address 216.239.34.10
and I see via me-gtt-google ( 3257 15169)
% traceroute -n -q1 -I 216.239.38.10 traceroute to 216.239.38.10 (216.239.38.10), 64 hops max, 48 byte packets 1 67.43.128.6 8.145 ms 2 205.211.164.33 7.990 ms 3 67.43.129.247 42.967 ms 4 69.174.3.205 31.794 ms 5 74.125.147.196 30.198 ms 6 74.125.244.146 41.023 ms 7 172.253.64.254 59.708 ms 8 72.14.232.70 41.107 ms 9 * 10 108.170.225.193 61.710 ms 11 * 12 * 13 *
I am getting timeouts or very slow responses
% date;host www.gmail.com 216.239.38.10;date Wed Jan 6 09:44:17 EST 2021 ;; connection timed out; no servers could be reached Wed Jan 6 09:44:27 EST 2021 %
I dont think its packet loss / a transport issue
% ping -q -i.1 -c 10 216.239.34.10 PING 216.239.34.10 (216.239.34.10): 56 data bytes
--- 216.239.34.10 ping statistics --- 10 packets transmitted, 10 packets received, 0.0% packet loss round-trip min/avg/max/stddev = 33.021/60.500/93.991/16.585 ms
However, routing is asymmetric as its coming back via Torix in Toronto, Canada.
But I dont see any packet loss on the pings.
---Mike
On 1/6/2021 9:35 AM, mike tancsa via Outages wrote:
It seems to be resolved (excuse the pun), but I was getting DNS timeouts on various google domains just now. downforme, https://downdetector.ca/status/gmail/ etc all noted it too so it didnt seem specific to my ASN. By the time I got a pcap going, it seemed to be back to normal
---Mike
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