[Openswan Users] Left side does not detect disconnection

Paul Wouters paul at xelerance.com
Mon Nov 21 23:32:10 EST 2011

On Mon, 21 Nov 2011, Erich Titl wrote:

>> dpdaction=restart_by_peer will restart connection in case of disconnect
>> automatically.
> Just to feed my interest
> - is is possible to have sub_second intervals for dpd?

No. That's like playing russian roulette with a fully loaded gun.

> - have you ever tried dpddelay=0 and dpdtimeout=1

a value of 0 is likely to mean "disabled". At best it is "unspecified".

> from http://www.openswan.org/docs/local/README.DPD
> The dpdaction parameter controls what we do when a peer is determined to
> be dead. If set to "hold" (the default) it will place the eroute into
> %hold status, and wait for the peer to return.  If set to "clear" it will
> remove the connection entirely, including both the SA and eroute.
> where are the other parameter values documented?

in the man page for ipsec.conf:

            When a DPD enabled peer is declared dead, what action should be
            taken.  hold (default) means the eroute will be put into %hold
            status, while clear means the eroute and SA with both be cleared.
            restart means the the SA will immediately be renegotiated, and
            restart_by_peer means that ALL SA's to the dead peer will

            dpdaction=clear is really only useful on the server of a Road
            Warrior config.


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