//
  // Validation requirements:
  //  1. certificate must contain one or more PEM blocks.
  //  2. All PEM blocks must have the "CERTIFICATE" label, contain no headers, and the encoded data
  //   must be a BER-encoded ASN.1 Certificate structure as described in section 4 of RFC5280.
  //  3. Non-PEM content may appear before or after the "CERTIFICATE" PEM blocks and is unvalidated,

// that should not be included within this rule.
message IPBlock {
  // CIDR is a string representing the IP Block
  // Valid examples are "192.168.1.0/24" or "2001:db8::/64"
  optional string cidr = 1;

  // Except is a slice of CIDRs that should not be included within an IP Block
  // Valid examples are "192.168.1.0/24" or "2001:db8::/64"
  // Except values will be rejected if they are outside the CIDR range

  // driver can be mounted separately with different `-o context` options. This is
  // typical for storage backends that provide volumes as filesystems on block
  // devices or as independent shared volumes.
  // Kubernetes will call NodeStage / NodePublish with "-o context=xyz" mount
  // option when mounting a ReadWriteOncePod volume used in Pod that has

  // driver can be mounted separately with different `-o context` options. This is
  // typical for storage backends that provide volumes as filesystems on block
  // devices or as independent shared volumes.
  // Kubernetes will call NodeStage / NodePublish with "-o context=xyz" mount
  // option when mounting a ReadWriteOncePod volume used in Pod that has