Per-connection errors from accept() that can be skipped immediately.
All other errors (e.g., EMFILE/ENFILE resource exhaustion) warrant a sleep
before retrying. Mirrors hyperβs AddrIncoming classification.
The process ordinal for a StatefulSet pod, taken from the trailing
--delimited segment of its hostname (e.g.
βmz5ncn-cluster-s1-replica-s1-gen-1-0β β β0β). This mirrors how
orchestrator-kubernetes recovers the process id from pod names.