Ошибка pppd 2.4.4 при работе с клиентом Linux

После смены ПО на сервере и установки Mandriva 2008, перестали нормально работать Linux клиенты при подключении по VPN и модему.
На сервере при этом в логах

Nov 21 16:45:55 ns1 pppd[3297]: Plugin radius.so loaded.
Nov 21 16:45:55 ns1 pppd[3297]: RADIUS plugin initialized.
Nov 21 16:45:55 ns1 pppd[3297]: Plugin radattr.so loaded.
Nov 21 16:45:55 ns1 pppd[3297]: RADATTR plugin initialized.
Nov 21 16:45:55 ns1 pppd[3297]: Plugin /usr/lib/pptpd/pptpd-logwtmp.so loaded.
Nov 21 16:45:55 ns1 pppd[3297]: pppd 2.4.4 started by root, uid 0
Nov 21 16:45:55 ns1 pppd[3297]: Using interface ppp5
Nov 21 16:45:55 ns1 pppd[3297]: Connect: ppp5 <--> /dev/pts/12
Nov 21 16:45:55 ns1 pptpd[3295]: GRE: Bad checksum from pppd.
Nov 21 16:45:57 ns1 pppd[3297]: MPPE 128-bit stateless compression enabled
Nov 21 16:45:57 ns1 pppd[3297]: not replacing existing default route via 193.233.133.26
Nov 21 16:45:57 ns1 pppd[3297]: local IP address 172.16.132.2
Nov 21 16:45:57 ns1 pppd[3297]: remote IP address 172.16.131.10
Nov 21 16:45:58 ns1 pppd[3297]: Traffic limit reached. Limit: 2147483648 Used: 0
Nov 21 16:45:58 ns1 pppd[3297]: Connect time 0.1 minutes.
Nov 21 16:45:58 ns1 pppd[3297]: Sent 0 bytes, received 0 bytes.
Nov 21 16:45:58 ns1 pppd[3297]: MPPE disabled
Nov 21 16:45:58 ns1 pppd[3297]: Connection terminated.
Nov 21 16:45:58 ns1 pppd[3297]: Exit.

У клиента в логах

Nov 21 16:50:04 mnk pppd[6356]: pppd 2.4.4 started by root, uid 0
Nov 21 16:50:04 mnk pppd[6356]: Using interface ppp0
Nov 21 16:50:04 mnk pppd[6356]: Connect: ppp0 <--> /dev/pts/5
Nov 21 16:50:06 mnk pppd[6356]: CHAP authentication succeeded
Nov 21 16:50:06 mnk pppd[6356]: MPPE 128-bit stateless compression enabled
Nov 21 16:50:06 mnk pppd[6356]: local IP address 172.16.131.10
Nov 21 16:50:06 mnk pppd[6356]: remote IP address 172.16.132.2
Nov 21 16:50:06 mnk pppd[6356]: primary DNS address 172.16.130.1
Nov 21 16:50:06 mnk pppd[6356]: secondary DNS address 172.16.130.1
Nov 21 16:50:07 mnk pppd[6356]: LCP terminated by peer (MPPE disabled)
Nov 21 16:50:07 mnk pppd[6356]: Connect time 0.1 minutes.
Nov 21 16:50:07 mnk pppd[6356]: Sent 0 bytes, received 0 bytes.

При чем виндовые клиенты работают замечательно.
Может кто подскажет, что делать? Может откатить на ppp-2.4.3?