return nil, os.NewSyscallError("socket", syscall.ENOTSUP)
	}

	fd := &netFD{
		family: family,
		sotype: sotype,
		net:    net,
	}
	fd.fakeNetFD = newFakeNetFD(fd)

	if raddr == nil {
		if err := fakeListen(fd, laddr); err != nil {
			fd.Close()
			return nil, err
		}
		return fd, nil
	}

	if err := fakeConnect(ctx, fd, laddr, raddr); err != nil {
		fd.Close()
		return nil, err
	}
	return fd, nil
}