- [alpha] Introducing `kubefed`, a new command line tool to simplify federation control plane. ([docs](http://kubernetes.io/docs/admin/federation/kubefed/)) ([kubernetes/features#97](https://github.com/kubernetes/enhancements/issues/97))
- **Network**

* Filter duplicate network packets in promiscuous bridge mode (with ebtables) ([#28717](https://github.com/kubernetes/kubernetes/pull/28717), [@freehan](https://github.com/freehan))
* Refactor to simplify the hard-traveled path of the KubeletConfiguration object ([#29216](https://github.com/kubernetes/kubernetes/pull/29216), [@mtaufen](https://github.com/mtaufen))

  }

  // Inner Classes

  /**
   * Segments are specialized versions of hash tables. This subclass inherits from ReentrantLock
   * opportunistically, just to simplify some locking and avoid separate construction.
   */
  @SuppressWarnings("serial") // This class is never serialized.
  static final class Segment<K, V> extends ReentrantLock {

    /*

  }

  // Inner Classes

  /**
   * Segments are specialized versions of hash tables. This subclass inherits from ReentrantLock
   * opportunistically, just to simplify some locking and avoid separate construction.
   */
  @SuppressWarnings("serial") // This class is never serialized.
  static final class Segment<K, V> extends ReentrantLock {

    /*

er-Side-Encryption-S3-Sealed-Key":"IAAfAL58FkKVeYnZUDR0/LLKEVduOvddehcdpw==","X-Minio-Internal-Server-Side-Encryption-Seal-Algorithm":"DAREv2-HMAC-SHA256","content-type":"application/octet-stream"}},{"Bucket":"buck1","Name":"go_113/src/cmd/gofmt/simplify.go","UserDef":{"X-Minio-Internal-Server-Side-Encryption-Iv":"h6Qf+h1OL0VVWtrd3WN5XUhpQ=","X-Minio-Internal-Server-Side-Encryption-S3-Kms-Key-Id":"my-minio-key","X-Minio-Internal-Server-Side-Encryption-S3-Kms-Sealed-Key":"IAAfAIClYbiVTFT9KXJg+2Tg...

speech, they all cheered.

  Alice thought the whole thing very absurd, but they all looked
so grave that she did not dare to laugh; and, as she could not
think of anything to say, she simply bowed, and took the thimble,
looking as solemn as she could.

  The next thing was to eat the comfits:  this caused some noise
and confusion, as the large birds complained that they could not

speech, they all cheered.

  Alice thought the whole thing very absurd, but they all looked
so grave that she did not dare to laugh; and, as she could not
think of anything to say, she simply bowed, and took the thimble,
looking as solemn as she could.

  The next thing was to eat the comfits:  this caused some noise
and confusion, as the large birds complained that they could not

    }

    /**
     * Tests to see if the file this <code>SmbFile</code> represents can be
     * read. Because any file, directory, or other resource can be read if it
     * exists, this method simply calls the <code>exists</code> method.
     *
     * @return <code>true</code> if the file is read-only
     * @throws SmbException if an error occurs while checking read permissions
     */

        }
      }
    }
  }

  /**
   * Call the non-timed {@link Future#get()} in a way that allows us to abort if it's expected to
   * hang forever. More precisely, if it's expected to return, we simply call it[*], but if it's
   * expected to hang (because one of the input futures that we know makes it up isn't done yet),
   * then we call it in a separate thread (using pseudoTimedGet). The result is that we wait as long

        }
      }
    }
  }

  /**
   * Call the non-timed {@link Future#get()} in a way that allows us to abort if it's expected to
   * hang forever. More precisely, if it's expected to return, we simply call it[*], but if it's
   * expected to hang (because one of the input futures that we know makes it up isn't done yet),
   * then we call it in a separate thread (using pseudoTimedGet). The result is that we wait as long