diff --git a/openstack/networking/v2/ports/requests.go b/openstack/networking/v2/ports/requests.go
index 2caf1ca..52e6e43 100644
--- a/openstack/networking/v2/ports/requests.go
+++ b/openstack/networking/v2/ports/requests.go
@@ -168,12 +168,13 @@
 
 // UpdateOpts represents the attributes used when updating an existing port.
 type UpdateOpts struct {
-	Name           string
-	AdminStateUp   *bool
-	FixedIPs       interface{}
-	DeviceID       string
-	DeviceOwner    string
-	SecurityGroups []string
+	Name                string
+	AdminStateUp        *bool
+	FixedIPs            interface{}
+	DeviceID            string
+	DeviceOwner         string
+	SecurityGroups      []string
+	AllowedAddressPairs interface{}
 }
 
 // ToPortUpdateMap casts an UpdateOpts struct to a map.
@@ -198,6 +199,9 @@
 	if opts.Name != "" {
 		p["name"] = opts.Name
 	}
+	if opts.AllowedAddressPairs != nil {
+		p["allowed_address_pairs"] = opts.AllowedAddressPairs
+	}
 
 	return map[string]interface{}{"port": p}, nil
 }
diff --git a/openstack/networking/v2/ports/requests_test.go b/openstack/networking/v2/ports/requests_test.go
index 9e323ef..cf6ff34 100644
--- a/openstack/networking/v2/ports/requests_test.go
+++ b/openstack/networking/v2/ports/requests_test.go
@@ -252,6 +252,12 @@
                 "ip_address": "10.0.0.3"
             }
         ],
+        "allowed_address_pairs": [
+          {
+            "ip_address": "10.0.0.4",
+            "mac_address": "fa:16:3e:c9:cb:f0"
+          }
+        ],
 				"security_groups": [
             "f0ac4394-7e4a-4409-9701-ba8be283dbc3"
         ]
@@ -294,6 +300,9 @@
 			IP{SubnetID: "a0304c3a-4f08-4c43-88af-d796509c97d2", IPAddress: "10.0.0.3"},
 		},
 		SecurityGroups: []string{"f0ac4394-7e4a-4409-9701-ba8be283dbc3"},
+		AllowedAddressPairs: []AddressPair{
+			AddressPair{IPAddress: "10.0.0.4", MACAddress: "fa:16:3e:c9:cb:f0"},
+		},
 	}
 
 	s, err := Update(fake.ServiceClient(), "65c0ee9f-d634-4522-8954-51021b570b0d", options).Extract()
diff --git a/openstack/networking/v2/ports/results.go b/openstack/networking/v2/ports/results.go
index 2511ff5..dd2bd1a 100644
--- a/openstack/networking/v2/ports/results.go
+++ b/openstack/networking/v2/ports/results.go
@@ -51,6 +51,11 @@
 	IPAddress string `mapstructure:"ip_address" json:"ip_address,omitempty"`
 }
 
+type AddressPair struct {
+	IPAddress  string `mapstructure:"ip_address" json:"ip_address,omitempty"`
+	MACAddress string `mapstructure:"mac_address" json:"mac_address"`
+}
+
 // Port represents a Neutron port. See package documentation for a top-level
 // description of what this is.
 type Port struct {