[pptp-server] PPTP connection problem: "discarding out-of-ouder"

[Tife Chan]

Hi all,
I've successfully setup the pptp server and client, but when i try to
download files from server side network to the client machine, the client
side continueously pop out this message

warn[decaps_gre:pptp_gre.c:239]: discarding out-of-ouder

and the download speed drops accrodingly.... did anyone exprienced this
problem too? any solution about that? my server is RedHat 7 with pptpd-1.1.1
and client machine is also RedHat 7 with the pptp client installed.

Thanks a lot!

Regards,
Tife