NET unregister

I am successful in getting connected to internet but the /var/log/message gives this message on every time i get connected to internet what’s this? Will some please explain me?

Oct 2 04:38:39 localhost modprobe: modprobe: Can't locate module ppp0

Oct 2 04:38:39 localhost modprobe: modprobe: Can't locate module ppp0

Oct 2 04:38:39 localhost kernel: CSLIP: code copyright 1989 Regents of the University of California

Oct 2 04:38:39 localhost kernel: PPP generic driver version 2.4.2

Oct 2 04:38:39 localhost modprobe: modprobe: Can't locate module ppp0

Oct 2 04:38:39 localhost pppd[9791]: pppd 2.4.1 started by root, uid 0

Oct 2 04:38:39 localhost modprobe: modprobe: Can't locate module ppp0

Oct 2 04:38:39 localhost pppd[9791]: Using interface ppp0

Oct 2 04:38:39 localhost pppd[9791]: Connect: ppp0 <–> /dev/ttyS1

Oct 2 04:38:40 localhost /etc/hotplug/net.agent: assuming ppp0 is already up

Oct 2 04:38:46 localhost modprobe: modprobe: Can't locate module ppp-compress-21

Oct 2 04:38:46 localhost kernel: PPP Deflate Compression module registered

Oct 2 04:38:46 localhost modprobe: modprobe: Can't locate module ppp-compress-21

Oct 2 04:38:46 localhost pppd[9791]: local IP address 203.94.220.213

Oct 2 04:38:46 localhost pppd[9791]: remote IP address 203.94.230.149

Oct 2 04:38:46 localhost pppd[9791]: primary DNS address 203.94.227.70

Oct 2 04:38:46 localhost pppd[9791]: secondary DNS address 203.94.243.70

Oct 2 05:01:44 localhost pppd[9791]: Terminating on signal 15.

Oct 2 05:01:50 localhost pppd[9791]: Connection terminated.

Oct 2 05:01:50 localhost pppd[9791]: Connect time 23.1 minutes.

Oct 2 05:01:50 localhost pppd[9791]: Sent 516691 bytes, received 3131710 bytes.

Oct 2 05:01:51 localhost pppd[9791]: Exit.

Oct 2 05:01:51 localhost /etc/hotplug/net.agent: NET unregister event not supported

Thanks in advance