1. Introduction
Linux distinguishes between administrative and operational state of an
-interface. Admininstrative state is the result of "ip link set dev
+interface. Administrative state is the result of "ip link set dev
<dev> up or down" and reflects whether the administrator wants to use
the device for traffic.
ifinfomsg::if_flags & IFF_DORMANT:
Driver has signaled netif_dormant_on()
-These interface flags can also be queried without netlink using the
-SIOCGIFFLAGS ioctl.
-
TLV IFLA_OPERSTATE
contains RFC2863 state of the interface in numeric representation: