In the parent task, mc1035 was configured with interface::rps as attempt to mitigate the effects of traffic bursts on Nov 5th with https://gerrit.wikimedia.org/r/#/c/operations/puppet/+/471234/
There is another code review open to extend the same setting to the other nodes (https://gerrit.wikimedia.org/r/#/c/operations/puppet/+/472099/) but before applying it some review needs to be done. Two graphs follows with node_network_receive_drop trends over the past weeks:
The first one is mc1035 only, and the major peaks corresponds to the increase in traffic that we are trying to solve in the parent task. The second one is about the rest of the nodes.