Given the original intent of entry->host, the check for DoS attacks, it
can happen that this value remains NULL when an entry is created. This
is particularly awkward if put_connected_peers is called to check if a
connection to a given peer already exists, since it takes the address
family into consideration (git commit b74219d0) which is gleaned from
entry->host.
This patch guarantees that entry->other is a clone of host before
put_connected_peers is called.
In some cases (especially if a child is half-open) the colliding
rekey-job might not have created the ike_init member. If so, the
nonce check fails with SIGSEGV.
This output helps tracing checkout and checkin of IKE_SAs when there is
more than one IKE_SAs with the same name. I also added the type of
in-air-exchange to the debug output issued by the task_manager in case
a task initiation is delayed, came in handy for me.
Thomas Egerer