diff --git a/doc/source/support-matrix.ini b/doc/source/support-matrix.ini
index c6bdcb1c173a..cfd8cf8adf53 100644
--- a/doc/source/support-matrix.ini
+++ b/doc/source/support-matrix.ini
@@ -127,6 +127,54 @@ driver-impl-ironic=missing
 driver-impl-libvirt-vz-vm=complete
 driver-impl-libvirt-vz-ct=missing
 
+[operation.attach-interface]
+title=Attach virtual network interface to instance
+status=optional
+notes=The attach interface operation provides a means to hotplug
+  additional interfaces to a running instance. Hotplug support
+  varies between guest OSes and some guests require a reboot for
+  new interfaces to be detected. This operation allows interface
+  capabilities to be expanded without interruption of service.
+  In a cloud model it would be more typical to just spin up a
+  new instance with more interfaces.
+cli=nova interface-attach <server>
+driver-impl-xenserver=missing
+driver-impl-libvirt-kvm-x86=complete
+driver-impl-libvirt-kvm-ppc64=complete
+driver-impl-libvirt-kvm-s390x=complete
+driver-impl-libvirt-qemu-x86=complete
+driver-impl-libvirt-lxc=missing
+driver-impl-libvirt-xen=complete
+driver-impl-vmware=complete
+driver-impl-hyperv=partial
+driver-notes-hyperv=Works without issue if instance is off. When
+  hotplugging, only works if using Windows/Hyper-V Server 2016 and
+  the instance is a Generation 2 VM.
+driver-impl-ironic=missing
+driver-impl-libvirt-vz-vm=complete
+driver-impl-libvirt-vz-ct=complete
+
+[operation.detach-interface]
+title=Detach virtual network interface from instance
+status=optional
+notes=See notes for attach-interface operation.
+cli=nova interface-detach <server> <port_id>
+driver-impl-xenserver=missing
+driver-impl-libvirt-kvm-x86=complete
+driver-impl-libvirt-kvm-ppc64=complete
+driver-impl-libvirt-kvm-s390x=complete
+driver-impl-libvirt-qemu-x86=complete
+driver-impl-libvirt-lxc=missing
+driver-impl-libvirt-xen=complete
+driver-impl-vmware=complete
+driver-impl-hyperv=complete
+driver-notes-hyperv=Works without issue if instance is off. When
+  hotplugging, only works if using Windows/Hyper-V Server 2016 and
+  the instance is a Generation 2 VM.
+driver-impl-ironic=missing
+driver-impl-libvirt-vz-vm=complete
+driver-impl-libvirt-vz-ct=complete
+
 [operation.maintenance-mode]
 title=Set the host in a maintenance mode
 status=optional