Проблемы с pptpd

Jan 1 12:38:33 localhost pptpd[13198]: CTRL: Starting call (launching pppd, opening GRE) Jan 1 12:38:33 localhost pppd[13199]: Plugin radius.so loaded. Jan 1 12:38:33 localhost pppd[13199]: RADIUS plugin initialized. Jan 1 12:38:33 localhost pppd[13199]: Plugin radattr.so loaded. Jan 1 12:38:33 localhost pppd[13199]: RADATTR plugin initialized. Jan 1 12:38:33 localhost pppd[13199]: pppd 2.4.4 started by root, uid 0 Jan 1 12:38:33 localhost pppd[13199]: Using interface ppp0 Jan 1 12:38:33 localhost pppd[13199]: Connect: ppp0 <--> /dev/pts/1 Jan 1 12:38:33 localhost pptpd[13198]: GRE: Bad checksum from pppd. Jan 1 12:38:36 localhost pptpd[13198]: CTRL: Ignored a SET LINK INFO packet with real ACCMs! Jan 1 12:38:37 localhost pppd[13199]: Jan 1 12:38:37 localhost pppd[13199]: Peer new failed CHAP authentication Jan 1 12:38:37 localhost pppd[13199]: Connection terminated. Jan 1 12:38:37 localhost pppd[13199]: Exit. Jan 1 12:38:37 localhost pptpd[13198]: GRE: read(fd=6,buffer=8059660,len=8196) from PTY failed: status = -1 error = Input/output error, usually caused by unexpected termination of pppd, check option syntax and pppd logs Jan 1 12:38:37 localhost pptpd[13198]: CTRL: PTY read or GRE write failed (pty,gre)=(6,7) Jan 1 12:38:37 localhost pptpd[13198]: CTRL: Client 10.100.100.7 control connection finished