Hey, we've been seeing some unusual latency between and inside zones (within the same region) in Azure. Usually between zones rtt would be 1.1-1.5ms, for a couple of days we're seeing averages of 4ms and individual pings up to 20ms. It seems to happen with Dv4/Ev4/Dv5/Ev5 (accelerated network) VMs only. Inside the same zone rtt would usually be 0.5-1ms, now that is upto 8ms, average around 2.5ms. Also this does not seem to be in a single region, I've seen this happening in East US, West Europe and Germany West Central; did not test more regions yet :)

Did MS mess up their accelerated network on those VM types?