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IPSEC_PF_KEY(5)                                                IPSEC_PF_KEY(5)

       ipsec_pf_key - lists PF_KEY sockets registered with KLIPS

       cat /proc/net/pf_key

       Note  that pf_key is only supported on the KLIPS and MAST stacks. It is
       not supported on any other stack.

       /proc/net/pf_key is a read-only file which  lists  the  presently  open
       PF_KEY sockets on the local system and their parameters.

       Each line lists one PF_KEY socket. A table entry consists of:

       +      sock pointer (sock)

       +      PID of the socket owner (pid)

       +      flag to indicate if the socket is dead (d)

       +      socket wait queue (sleep)

       +      socket pointer (socket)

       +      next socket in chain (next)

       +      previous socket in chain (prev)

       +      last socket error (e)

       +      pointer to destruct routine (destruct)

       +      is this a reused socket (r)

       +      has this socket been zapped (z)

       +      socket family to which this socket belongs (fa)

       +      local port number (n)

       +      protocol version number (p)

       +      Receive queue bytes committed (r)

       +      Transmit queue bytes committed (w)

       +      option memory allocations (o)

       +      size of send buffer in bytes (sndbf)

       +      timestamp in seconds (stamp)

       +      socket flags (Flags)

       +      socket type (Type)

       +      connection state (St)

       c3b8c140  3553  0  c0599818  c05997fc  0  0  0 0 1 0 15 0 2 0 0 0 65535
       0.103232 00000000 00000003 01

       shows that there is one pf_key socket set up that starts  at  c3b8c140,
       whose  owning  process  has  PID 3553, the socket is not dead, its wait
       queue is at c0599818, whose owning socket is at c05997fc, with no other
       sockets  in  the chain, no errors, no destructor, it is a reused socket
       which has not been zapped, from protocol family 15 (PF_KEY), local port
       number  0,  protocol socket version 2, no memory allocated to transmit,
       receive or option queues, a send buffer of almost 64kB, a timestamp  of
       0.103232, no flags set, type 3, in state 1.


       ipsec(8),  ipsec_manual(8),  ipsec_eroute(5),  ipsec_spi(5), ipsec_spi-
       grp(5), ipsec_klipsdebug(5), ipsec_tncfg(8), ipsec_version(5)

       Written for  the  Linux  FreeS/WAN  project  <http://www.freeswan.org/:
       http://www.freeswan.org/> by Richard Guy Briggs.