Classify a per-target failure as retryable. Only the locked allowlist retries:
generic transport/network failures and dropped/closed connections (including
REST 5xx mapped to transport/connection-closed). Router-side (routeros/*),
validation, auth, cdb, target, input, usage, timeout, TLS, connection-refused,
and DNS failures are deterministic and never retried.
Classify a per-target failure as retryable. Only the locked allowlist retries: generic transport/network failures and dropped/closed connections (including REST 5xx mapped to
transport/connection-closed). Router-side (routeros/*), validation, auth, cdb, target, input, usage, timeout, TLS, connection-refused, and DNS failures are deterministic and never retried.