Upstream commit: 6eaf10cbb78d22eae7999d9de55f6b93999e0860
- socket: Do not use AF_NETLINK in __opensock
- hurd if_index: Explicitly use AF_INET for if index discovery
- Linux: Simplify __opensock and fix race condition [BZ #28353]
- linux: __get_nprocs_sched: do not feed CPU_COUNT_S with garbage [BZ #28850]