ntpdate with u3g - synchronisation problem

[Mike Tancsa]

At 06:20 AM 8/19/2009, Milan Obuch wrote:
>Hi,
>
>I have a box connected via u3g (Huawei E169) running OpenVPN with PKI
>certificates. It needs to synchronise time. I added

Better to fire it when the ppp link actually comes up.  This could be 
well after the machine boots since you might not immediately have 
signal.  If your ppp label is called gprs for example, in
/etc/ppp/ppp.linkup

add

gprs:
  ! /usr/sbin/ntpdate -s <your.ntp.ip>


         ---Mike

>ntpdate_enable="YES"
>ntpdate_flags="-b <my.ntpd.server.ip>"
>
>into rc.conf. Problem is, ntpdate timeouts, because network starts slowly in
>this case. I need ntpdate to wait somehow until ntp server is reachable. Due
>to USB used to connect 3G modem, ppp is started via devd event. Network start
>is a bit asynchronous, not ordered in rcorder sense.
>
>Could someone shed some lite on this for me? It looks a bit like synchronous
>DHCP - at least I think so.
>
>Any help appreciated.
>
>Regards,
>Milan
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