diff --git a/src/applications/almanac/editor/AlmanacDeviceEditor.php b/src/applications/almanac/editor/AlmanacDeviceEditor.php
index 8e110954a3..5a4246231e 100644
--- a/src/applications/almanac/editor/AlmanacDeviceEditor.php
+++ b/src/applications/almanac/editor/AlmanacDeviceEditor.php
@@ -11,7 +11,7 @@ final class AlmanacDeviceEditor
     $types = parent::getTransactionTypes();
 
     $types[] = AlmanacDeviceTransaction::TYPE_NAME;
-    $types[] = AlmanacDeviceTransaction::TYPE_INTERFACE;
+
     $types[] = PhabricatorTransactions::TYPE_VIEW_POLICY;
     $types[] = PhabricatorTransactions::TYPE_EDIT_POLICY;
 
@@ -35,7 +35,6 @@ final class AlmanacDeviceEditor
 
     switch ($xaction->getTransactionType()) {
       case AlmanacDeviceTransaction::TYPE_NAME:
-      case AlmanacDeviceTransaction::TYPE_INTERFACE:
         return $xaction->getNewValue();
     }
 
@@ -50,8 +49,6 @@ final class AlmanacDeviceEditor
       case AlmanacDeviceTransaction::TYPE_NAME:
         $object->setName($xaction->getNewValue());
         return;
-      case AlmanacDeviceTransaction::TYPE_INTERFACE:
-        return;
     }
 
     return parent::applyCustomInternalTransaction($object, $xaction);
@@ -64,37 +61,6 @@ final class AlmanacDeviceEditor
     switch ($xaction->getTransactionType()) {
       case AlmanacDeviceTransaction::TYPE_NAME:
         return;
-      case AlmanacDeviceTransaction::TYPE_INTERFACE:
-        $old = $xaction->getOldValue();
-        if ($old) {
-          $interface = id(new AlmanacInterfaceQuery())
-            ->setViewer($this->requireActor())
-            ->withIDs(array($old['id']))
-            ->executeOne();
-          if (!$interface) {
-            throw new Exception(pht('Unable to load interface!'));
-          }
-        } else {
-          $interface = AlmanacInterface::initializeNewInterface()
-            ->setDevicePHID($object->getPHID());
-        }
-
-        $new = $xaction->getNewValue();
-        if ($new) {
-          $interface
-            ->setNetworkPHID($new['networkPHID'])
-            ->setAddress($new['address'])
-            ->setPort((int)$new['port']);
-
-          if (idx($new, 'phid')) {
-            $interface->setPHID($new['phid']);
-          }
-
-          $interface->save();
-        } else {
-          $interface->delete();
-        }
-        return;
     }
 
     return parent::applyCustomExternalTransaction($object, $xaction);
@@ -180,153 +146,6 @@ final class AlmanacDeviceEditor
         }
 
         break;
-      case AlmanacDeviceTransaction::TYPE_INTERFACE:
-        // We want to make sure that all the affected networks are visible to
-        // the actor, any edited interfaces exist, and that the actual address
-        // components are valid.
-
-        $network_phids = array();
-        foreach ($xactions as $xaction) {
-          $old = $xaction->getOldValue();
-          $new = $xaction->getNewValue();
-          if ($old) {
-            $network_phids[] = $old['networkPHID'];
-          }
-          if ($new) {
-            $network_phids[] = $new['networkPHID'];
-
-            $address = $new['address'];
-            if (!strlen($address)) {
-              $error = new PhabricatorApplicationTransactionValidationError(
-                $type,
-                pht('Invalid'),
-                pht('Interfaces must have an address.'),
-                $xaction);
-              $errors[] = $error;
-            } else {
-              // TODO: Validate addresses, but IPv6 addresses are not trivial
-              // to validate.
-            }
-
-            $port = $new['port'];
-            if (!strlen($port)) {
-              $error = new PhabricatorApplicationTransactionValidationError(
-                $type,
-                pht('Invalid'),
-                pht('Interfaces must have a port.'),
-                $xaction);
-              $errors[] = $error;
-            } else if ((int)$port < 1 || (int)$port > 65535) {
-              $error = new PhabricatorApplicationTransactionValidationError(
-                $type,
-                pht('Invalid'),
-                pht(
-                  'Port numbers must be between 1 and 65535, inclusive.'),
-                $xaction);
-              $errors[] = $error;
-            }
-
-            $phid = idx($new, 'phid');
-            if ($phid) {
-              $interface_phid_type = AlmanacInterfacePHIDType::TYPECONST;
-              if (phid_get_type($phid) !== $interface_phid_type) {
-                $error = new PhabricatorApplicationTransactionValidationError(
-                  $type,
-                  pht('Invalid'),
-                  pht(
-                    'Precomputed interface PHIDs must be of type '.
-                    'AlmanacInterfacePHIDType.'),
-                  $xaction);
-                $errors[] = $error;
-              }
-            }
-          }
-        }
-
-        if ($network_phids) {
-          $networks = id(new AlmanacNetworkQuery())
-            ->setViewer($this->requireActor())
-            ->withPHIDs($network_phids)
-            ->execute();
-          $networks = mpull($networks, null, 'getPHID');
-        } else {
-          $networks = array();
-        }
-
-        $addresses = array();
-        foreach ($xactions as $xaction) {
-          $old = $xaction->getOldValue();
-          if ($old) {
-            $network = idx($networks, $old['networkPHID']);
-            if (!$network) {
-              $error = new PhabricatorApplicationTransactionValidationError(
-                $type,
-                pht('Invalid'),
-                pht(
-                  'You can not edit an interface which belongs to a '.
-                  'nonexistent or restricted network.'),
-                $xaction);
-              $errors[] = $error;
-            }
-
-            $addresses[] = $old['id'];
-          }
-
-          $new = $xaction->getNewValue();
-          if ($new) {
-            $network = idx($networks, $new['networkPHID']);
-            if (!$network) {
-              $error = new PhabricatorApplicationTransactionValidationError(
-                $type,
-                pht('Invalid'),
-                pht(
-                  'You can not add an interface on a nonexistent or '.
-                  'restricted network.'),
-                $xaction);
-              $errors[] = $error;
-            }
-          }
-        }
-
-        if ($addresses) {
-          $interfaces = id(new AlmanacInterfaceQuery())
-            ->setViewer($this->requireActor())
-            ->withDevicePHIDs(array($object->getPHID()))
-            ->withIDs($addresses)
-            ->execute();
-          $interfaces = mpull($interfaces, null, 'getID');
-        } else {
-          $interfaces = array();
-        }
-
-        foreach ($xactions as $xaction) {
-          $old = $xaction->getOldValue();
-          if ($old) {
-            $interface = idx($interfaces, $old['id']);
-            if (!$interface) {
-              $error = new PhabricatorApplicationTransactionValidationError(
-                $type,
-                pht('Invalid'),
-                pht('You can not edit an invalid or restricted interface.'),
-                $xaction);
-              $errors[] = $error;
-              continue;
-            }
-
-            $new = $xaction->getNewValue();
-            if (!$new) {
-              if ($interface->loadIsInUse()) {
-                $error = new PhabricatorApplicationTransactionValidationError(
-                  $type,
-                  pht('In Use'),
-                  pht('You can not delete an interface which is still in use.'),
-                  $xaction);
-                $errors[] = $error;
-              }
-            }
-          }
-        }
-      break;
     }
 
     return $errors;
diff --git a/src/applications/almanac/storage/AlmanacDeviceTransaction.php b/src/applications/almanac/storage/AlmanacDeviceTransaction.php
index fd1a21f782..b70ffbe008 100644
--- a/src/applications/almanac/storage/AlmanacDeviceTransaction.php
+++ b/src/applications/almanac/storage/AlmanacDeviceTransaction.php
@@ -4,7 +4,6 @@ final class AlmanacDeviceTransaction
   extends AlmanacTransaction {
 
   const TYPE_NAME = 'almanac:device:name';
-  const TYPE_INTERFACE = 'almanac:device:interface';
 
   public function getApplicationName() {
     return 'almanac';
@@ -18,26 +17,6 @@ final class AlmanacDeviceTransaction
     return null;
   }
 
-  public function getRequiredHandlePHIDs() {
-    $phids = parent::getRequiredHandlePHIDs();
-
-    $old = $this->getOldValue();
-    $new = $this->getNewValue();
-
-    switch ($this->getTransactionType()) {
-      case self::TYPE_INTERFACE:
-        if ($old) {
-          $phids[] = $old['networkPHID'];
-        }
-        if ($new) {
-          $phids[] = $new['networkPHID'];
-        }
-        break;
-    }
-
-    return $phids;
-  }
-
   public function getTitle() {
     $author_phid = $this->getAuthorPHID();
 
@@ -58,43 +37,9 @@ final class AlmanacDeviceTransaction
             $new);
         }
         break;
-      case self::TYPE_INTERFACE:
-        if ($old && $new) {
-          return pht(
-            '%s changed interface %s on this device to %s.',
-            $this->renderHandleLink($author_phid),
-            $this->describeInterface($old),
-            $this->describeInterface($new));
-        } else if ($old) {
-          return pht(
-            '%s removed the interface %s from this device.',
-            $this->renderHandleLink($author_phid),
-            $this->describeInterface($old));
-        } else if ($new) {
-          return pht(
-            '%s added the interface %s to this device.',
-            $this->renderHandleLink($author_phid),
-            $this->describeInterface($new));
-        }
     }
 
     return parent::getTitle();
   }
 
-  public function shouldGenerateOldValue() {
-    switch ($this->getTransactionType()) {
-      case self::TYPE_INTERFACE:
-        return false;
-    }
-    return parent::shouldGenerateOldValue();
-  }
-
-  private function describeInterface(array $info) {
-    return pht(
-      '%s:%s (%s)',
-      $info['address'],
-      $info['port'],
-      $this->renderHandleLink($info['networkPHID']));
-  }
-
 }