TODO items:

:establish_connection_cb might call send_connect_request
which might call :establish_connection_cb recursively.

#4  0x000000000040af01 in time_watcher::trigger (this=0x52e198) at callback.h:141
#5  0x0000000000403e7a in vpn::send_connect_request (this=0x51a6e0, id=5436496) at iom.h:154
#6  0x000000000040e2b7 in connection::establish_connection_cb (this=0x52dff0, w=@0x52e198) at connection.C:764
#7  0x000000000040fa59 in callback1<void, time_watcher&>::proxy<connection, connection>::call (this=0x52e2a0, obj=0x52e2a0, meth=
    (void ( struct callback1<void,time_watcher&>::object::*)(time_watcher &,)) 531452, a1=@0x52f450) at callback.h:122
#8  0x000000000040af01 in time_watcher::trigger (this=0x52e198) at callback.h:141
#9  0x0000000000403e7a in vpn::send_connect_request (this=0x51a6e0, id=5436496) at iom.h:154
#10 0x000000000040e2b7 in connection::establish_connection_cb (this=0x52dff0, w=@0x52e198) at connection.C:764
#11 0x000000000040fa59 in callback1<void, time_watcher&>::proxy<connection, connection>::call (this=0x52e2a0, obj=0x52e2a0, meth=
    (void ( struct callback1<void,time_watcher&>::object::*)(time_watcher &,)) 531452, a1=@0x52f450) at callback.h:122
#12 0x000000000040af01 in time_watcher::trigger (this=0x52e198) at callback.h:141
#13 0x0000000000403e7a in vpn::send_connect_request (this=0x51a6e0, id=5436496) at iom.h:154
#14 0x000000000040e2b7 in connection::establish_connection_cb (this=0x52dff0, w=@0x52e198) at connection.C:764
#15 0x000000000040fa59 in callback1<void, time_watcher&>::proxy<connection, connection>::call (this=0x52e2a0, obj=0x52e2a0, meth=
    (void ( struct callback1<void,time_watcher&>::object::*)(time_watcher &,)) 531452, a1=@0x52f450) at callback.h:122
#16 0x000000000040af01 in time_watcher::trigger (this=0x52e198) at callback.h:141
#17 0x0000000000403e7a in vpn::send_connect_request (this=0x51a6e0, id=5436496) at iom.h:154
#18 0x000000000040e2b7 in connection::establish_connection_cb (this=0x52dff0, w=@0x52e198) at connection.C:764
#19 0x000000000040fa59 in callback1<void, time_watcher&>::proxy<connection, connection>::call (this=0x52e2a0, obj=0x52e2a0, meth=
    (void ( struct callback1<void,time_watcher&>::object::*)(time_watcher &,)) 531452, a1=@0x52f450) at callback.h:122
#20 0x000000000040af01 in time_watcher::trigger (this=0x52e198) at callback.h:141
#21 0x0000000000403e7a in vpn::send_connect_request (this=0x51a6e0, id=5436496) at iom.h:154
#22 0x000000000040e2b7 in connection::establish_connection_cb (this=0x52dff0, w=@0x52e198) at connection.C:764
#23 0x000000000040fa59 in callback1<void, time_watcher&>::proxy<connection, connection>::call (this=0x52e2a0, obj=0x52e2a0, meth=
    (void ( struct callback1<void,time_watcher&>::object::*)(time_watcher &,)) 531452, a1=@0x52f450) at callback.h:122
#24 0x000000000040af01 in time_watcher::trigger (this=0x52e198) at callback.h:141
#25 0x0000000000403e7a in vpn::send_connect_request (this=0x51a6e0, id=5436496) at iom.h:154
#26 0x000000000040e2b7 in connection::establish_connection_cb (this=0x52dff0, w=@0x52e198) at connection.C:764
#27 0x000000000040fa59 in callback1<void, time_watcher&>::proxy<connection, connection>::call (this=0x52e2a0, obj=0x52e2a0, meth=
    (void ( struct callback1<void,time_watcher&>::object::*)(time_watcher &,)) 531452, a1=@0x52f450) at callback.h:122
#28 0x000000000040af01 in time_watcher::trigger (this=0x52e198) at callback.h:141
#29 0x0000000000403e7a in vpn::send_connect_request (this=0x51a6e0, id=5436496) at iom.h:154
#30 0x000000000040e2b7 in connection::establish_connection_cb (this=0x52dff0, w=@0x52e198) at connection.C:764


- kill -USR1 should not reconnect but just refresh with pinging
- mac=xxxxx config directive, to allow windows etc.
- on shell xyz
- add a general vpn introduction to the manual
- reformat the texinfo manual to look less manpagish
- use gnutls instead of openssl

- vped <no nodename> => starts without error message but fails to connect
- should tets own hostkey for validity
- re-bind() on HUP
- Feb 26 18:48:31 (none) modprobe: modprobe: Can't locate module  (^E^H(