Command Section
NG_EIFACE(4)           FreeBSD Kernel Interfaces Manual           NG_EIFACE(4)

     ng_eiface - generic Ethernet interface netgraph node type

     #include <netgraph/ng_eiface.h>

     The eiface netgraph node implements the generic Ethernet interface.  When
     eiface node is created, a new interface appears which is accessible via
     ifconfig(8).  These interfaces are named ``ngeth0'', ``ngeth1'', etc.
     When a node is shut down, the corresponding interface is removed, and the
     interface name becomes available for reuse by future eiface nodes.  New
     nodes always take the first unused interface.

     An eiface node has a single hook named ether, which should be connected
     to the Ethernet downstream, for example, to the ng_vlan(4) node.  Packets
     transmitted via the interface flow out this hook.  Similarly, packets
     received on the hook go to the protocol stack as packets received by any
     real Ethernet interface.

     This node type supports the generic control messages, plus the following:

     NGM_EIFACE_SET (set)
          Set link-level address of the interface.  Requires struct ether_addr
          as an argument.  This message also has an ASCII version, called
          ``set'', which requires as an argument an ASCII string consisting of
          6 colon-separated hex digits.

     NGM_EIFACE_GET_IFNAME (getifname)
          Return the name of the associated interface as a NUL-terminated
          ASCII string.

          Return the list of link-level addresses associated with the node.

     This node shuts down upon receipt of a NGM_SHUTDOWN control message.  The
     associated interface is removed and its name becomes available for reuse
     by future eiface nodes.

     Unlike most other node types, an eiface node does not go away when all
     hooks have been disconnected; rather, and explicit NGM_SHUTDOWN control
     message is required.

     netgraph(4), ng_ether(4), ng_iface(4), ng_vlan(4), ifconfig(8), ngctl(8)

     The eiface node type was implemented in FreeBSD 4.6.

     The eiface node type was written by Vitaly V Belekhov.  This manual page
     was written by Gleb Smirnoff.

FreeBSD 11.1-RELEASE-p4        February 3, 2005        FreeBSD 11.1-RELEASE-p4
Command Section