We 've recently noticed that the kubernetes codfw cluster has a steady rate of outdoing discarded packets. While not alarming, the very steady rate of these errors is peculiar and warrants more investigation.
As per the graph below
the error rate is ~5 discarded packets per sec. These are outgoing packets. Digging into it some more it does seem that these are ICMP redirects.
We already found a bug in sysstat trying to follow up on this. See https://github.com/sysstat/sysstat/pull/226
It's worth noting that kubernetes