NAME

       /run/ifstate - interface state database

DESCRIPTION

       The  /run/ifstate  file  describes  the  present state of the interface configuration -- namely, how many
       interfaces are up, how many dependencies each interface has which are up (the refcount), and  whether  or
       not an interface was explicitly brought up due to request or configuration.

FILE SYNTAX

       At  a  minimum,  the  /run/ifstate  file  contains at least one column, the physical to logical interface
       mapping.  This column is formatted as such:

           lo=lo
           eth0=eth0
           wlan0=work

       The left side of the mapping is the physical interface, while the right side is  the  logical  interface.
       This field is required to be present.

       The  next field is the reference count.  This is a number that reflects the number of active dependencies
       an interface has.  As interfaces are brought up and  down,  the  refcount  may  change.   This  field  is
       optional.

       The  final  field denotes whether or not an interface was brought up explicitly -- either by being marked
       as auto or brought up manually using ifup(8).  The contents of this field  if  present  is  the  explicit
       keyword.

EXAMPLES

       An example from a typical system with localhost, eth0 and a wireguard VPN:

           lo=lo 1 explicit
           eth0=eth0 2 explicit
           wg0=wg0 1 explicit

SEE ALSO

       interfaces(5)

AUTHORS

       Ariadne Conill <ariadne@dereferenced.org>

                                                   2024-08-02                                         ifstate(5)