Использую модем Acorp на COM порт для поделючения в другому компу по РРР... после 1-2 секунд соединение обрывается. Вот что в логах:
Mar 11 17:26:32 8 pppd[27825]: pppd 2.4.4 started by a_ppp, uid 0
Mar 11 17:26:32 8 pppd[27825]: using channel 17
Mar 11 17:26:32 8 pppd[27825]: Using interface ppp0
Mar 11 17:26:32 8 pppd[27825]: Connect: ppp0 <--> /dev/ttyS0
Mar 11 17:26:32 8 pppd[27825]: sent [LCP ConfReq id=0x1 <asyncmap 0x0> <auth pap> <magic 0xf287c24d> <pcomp> <accomp>]
Mar 11 17:26:32 8 pppd[27825]: rcvd [LCP ConfAck id=0x1 <asyncmap 0x0> <auth pap> <magic 0xf287c24d> <pcomp> <accomp>]
Mar 11 17:26:35 8 pppd[27825]: rcvd [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0x757121cf> <pcomp> <accomp>]
Mar 11 17:26:35 8 pppd[27825]: sent [LCP ConfAck id=0x1 <asyncmap 0x0> <magic 0x757121cf> <pcomp> <accomp>]
Mar 11 17:26:35 8 pppd[27825]: rcvd [PAP AuthReq id=0x1 user="kvant" password=<hidden>]
Mar 11 17:26:35 8 pppd[27825]: sent [PAP AuthAck id=0x1 "Login ok"]
Mar 11 17:26:35 8 pppd[27825]: PAP peer authentication succeeded for kvant
Mar 11 17:26:35 8 pppd[27825]: sent [CCP ConfReq id=0x1 <mppe -H -M -S -L -D -C> <deflate 15> <deflate(old#) 15> <bsd v1 15>]
Mar 11 17:26:35 8 pppd[27825]: sent [IPCP ConfReq id=0x1 <compress VJ 0f 01> <addr 192.168.1.188>]
Mar 11 17:26:35 8 pppd[27825]: rcvd [CCP ConfReq id=0x1 <mppe -H -M -S -L -D -C> <deflate 15> <deflate(old#) 15> <bsd v1 15>]
Mar 11 17:26:35 8 pppd[27825]: sent [CCP ConfNak id=0x1 <mppe -H -M -S -L -D +C>]
Mar 11 17:26:36 8 pppd[27825]: rcvd [IPCP ConfReq id=0x1 <compress VJ 0f 01> <addr 192.168.1.199> <ms-dns1 0.0.0.0> <ms-dns3 0.0.0.0>]
Mar 11 17:26:36 8 pppd[27825]: sent [IPCP ConfRej id=0x1 <ms-dns1 0.0.0.0> <ms-dns3 0.0.0.0>]
Mar 11 17:26:36 8 pppd[27825]: rcvd [CCP ConfNak id=0x1 <mppe -H -M -S -L -D +C>]
Mar 11 17:26:36 8 pppd[27825]: sent [CCP ConfReq id=0x2 <mppe -H -M -S -L -D -C> <deflate 15> <deflate(old#) 15> <bsd v1 15>]
Mar 11 17:26:36 8 pppd[27825]: rcvd [IPCP ConfNak id=0x1 <addr 192.168.1.200>]
Mar 11 17:26:36 8 pppd[27825]: sent [IPCP ConfReq id=0x2 <compress VJ 0f 01> <addr 192.168.1.188>]
Mar 11 17:26:36 8 pppd[27825]: rcvd [CCP ConfReq id=0x2 <mppe -H -M -S -L -D -C> <deflate 15> <deflate(old#) 15> <bsd v1 15>]
Mar 11 17:26:36 8 pppd[27825]: sent [CCP ConfNak id=0x2 <mppe -H -M -S -L -D +C>]
Mar 11 17:26:36 8 pppd[27825]: rcvd [IPCP ConfReq id=0x2 <compress VJ 0f 01> <addr 192.168.1.199>]
Mar 11 17:26:36 8 pppd[27825]: sent [IPCP ConfAck id=0x2 <compress VJ 0f 01> <addr 192.168.1.199>]
Mar 11 17:26:36 8 pppd[27825]: rcvd [CCP ConfNak id=0x2 <mppe -H -M -S -L -D +C>]
Mar 11 17:26:36 8 pppd[27825]: sent [CCP ConfReq id=0x3 <mppe -H -M -S -L -D -C> <deflate 15> <deflate(old#) 15> <bsd v1 15>]
Mar 11 17:26:36 8 pppd[27825]: rcvd [IPCP ConfNak id=0x2 <addr 192.168.1.200>]
Mar 11 17:26:36 8 pppd[27825]: sent [IPCP ConfReq id=0x3 <compress VJ 0f 01> <addr 192.168.1.188>]
Mar 11 17:26:36 8 pppd[27825]: rcvd [CCP ConfReq id=0x3 <mppe -H -M -S -L -D -C> <deflate 15> <deflate(old#) 15> <bsd v1 15>]
Mar 11 17:26:36 8 pppd[27825]: sent [CCP ConfNak id=0x3 <mppe -H -M -S -L -D +C>]
Mar 11 17:26:36 8 pppd[27825]: rcvd [CCP ConfNak id=0x3 <mppe -H -M -S -L -D +C>]
Mar 11 17:26:36 8 pppd[27825]: sent [CCP ConfReq id=0x4 <mppe -H -M -S -L -D -C> <deflate 15> <deflate(old#) 15> <bsd v1 15>]
Mar 11 17:26:36 8 pppd[27825]: rcvd [IPCP ConfNak id=0x3 <addr 192.168.1.200>]
Mar 11 17:26:36 8 pppd[27825]: sent [IPCP ConfReq id=0x4 <compress VJ 0f 01> <addr 192.168.1.188>]
Mar 11 17:26:36 8 pppd[27825]: rcvd [CCP ConfReq id=0x4 <mppe -H -M -S -L -D -C> <deflate 15> <deflate(old#) 15> <bsd v1 15>]
Mar 11 17:26:36 8 pppd[27825]: sent [CCP ConfNak id=0x4 <mppe -H -M -S -L -D +C>]
Mar 11 17:26:36 8 pppd[27825]: rcvd [CCP ConfNak id=0x4 <mppe -H -M -S -L -D +C>]
Mar 11 17:26:36 8 pppd[27825]: sent [CCP ConfReq id=0x5 <mppe -H -M -S -L -D -C> <deflate 15> <deflate(old#) 15> <bsd v1 15>]
Mar 11 17:26:36 8 pppd[27825]: rcvd [IPCP ConfNak id=0x4 <addr 192.168.1.200>]
Mar 11 17:26:36 8 pppd[27825]: sent [IPCP ConfReq id=0x5 <compress VJ 0f 01> <addr 192.168.1.188>]
Mar 11 17:26:37 8 pppd[27825]: rcvd [CCP ConfReq id=0x5 <mppe -H -M -S -L -D -C> <deflate 15> <deflate(old#) 15> <bsd v1 15>]
Mar 11 17:26:37 8 pppd[27825]: sent [CCP ConfNak id=0x5 <mppe -H -M -S -L -D +C>]
Mar 11 17:26:37 8 pppd[27825]: rcvd [CCP ConfNak id=0x5 <mppe -H -M -S -L -D +C>]
Mar 11 17:26:37 8 pppd[27825]: sent [CCP ConfReq id=0x6 <mppe -H -M -S -L -D -C> <deflate 15> <deflate(old#) 15> <bsd v1 15>]
Mar 11 17:26:37 8 pppd[27825]: rcvd [IPCP ConfNak id=0x5 <addr 192.168.1.200>]
Mar 11 17:26:37 8 pppd[27825]: sent [IPCP ConfReq id=0x6 <compress VJ 0f 01>]
Mar 11 17:26:37 8 pppd[27825]: rcvd [CCP ConfReq id=0x6 <mppe -H -M -S -L -D -C> <deflate 15> <deflate(old#) 15> <bsd v1 15>]
Mar 11 17:26:37 8 pppd[27825]: sent [CCP ConfRej id=0x6 <mppe -H -M -S -L -D +C>]
Mar 11 17:26:37 8 pppd[27825]: rcvd [CCP ConfRej id=0x6 <mppe -H -M -S -L -D +C>]
Mar 11 17:26:37 8 pppd[27825]: Received bad configure-rej:  12 06 00 00 00 01
Mar 11 17:26:37 8 pppd[27825]: rcvd [IPCP ConfAck id=0x6 <compress VJ 0f 01>]
Mar 11 17:26:37 8 pppd[27825]: Peer refused to agree to our IP address
Mar 11 17:26:37 8 pppd[27825]: Connect time 0.1 minutes.
Mar 11 17:26:37 8 pppd[27825]: Sent 308 bytes, received 290 bytes.
Mar 11 17:26:37 8 pppd[27825]: sent [IPCP TermReq id=0x7 "Refused our IP address"]
Mar 11 17:26:37 8 pppd[27825]: rcvd [IPCP TermAck id=0x7]
Mar 11 17:26:37 8 pppd[27825]: sent [LCP TermReq id=0x2 "No network protocols running"]
Mar 11 17:26:37 8 pppd[27825]: rcvd [LCP TermAck id=0x2]
Mar 11 17:26:37 8 pppd[27825]: Connection terminated.
Mar 11 17:26:37 8 pppd[27825]: Connect time 0.1 minutes.
Mar 11 17:26:37 8 pppd[27825]: Sent 334 bytes, received 294 bytes.
Mar 11 17:26:38 8 pppd[27825]: Exit.