Проблема наблюдается с момента запуска сервиса pptpd с приведенным ниже конфигом, при использовании для авторизации файла chap-secret клиенты подключаются. Ключевым моментом является использование связки pptp+freeradius, сам freeradius настроен, при тестировании командой radtest отдает все необходимые параметры.
При подключении опций конфига (plugin radius.so и plugin radattr.so) pptpd хоть их и инициализирует, но обращений к radius-серверу в момент подключения клиентов нет.
Для меня пока непонятно в чем именно проблема, либо с моими конфигами, либо с багами установленных приложений.

Подскажите, может кто уже встречался с подобной проблемой и успешно её разрешил.
В инете решение проблемы найти не удалось.

Операционная система:

Debian lenny

Версии установленных пакетов:

ppp_2.4.5-4
pptpd_1.3.4-2.1
bcrelay_1.3.4-2.1
radiusclient1_0.3.2-13

Клиенты:

Win7 (обязательное шифрование отключено)
WinXP (обязательное шифрование отключено)

Конфигурационные файлы:

/etc/pptpd.conf

ppp /usr/sbin/pppd
option /etc/ppp/options.pptpd
debug dump
# stimeout 10
noipparam
logwtmp
bcrelay eth1
localip 192.168.0.1
#remoteip 192.168.0.234-238,192.168.0.245

/etc/ppp/options.pptpd

plugin radius.so
plugin radattr.so
debug dump
proxyarp
require-mschap-v2
ms-dns 8.8.8.8
require-mppe-128
-pap
+chap
+mschap
+mschap-v2

/etc/radiusclient/radiusclient.conf

authserver      127.0.0.1
acctserver      127.0.0.1

/etc/radiusclient/servers

127.0.0.1          password

Вывод лог-файла /var/log/syslog

Jan 13 02:56:04 linux pptpd[19646]: MGR: Launching /usr/sbin/pptpctrl to handle client
Jan 13 02:56:04 linux pptpd[19646]: CTRL: local address = 192.168.0.1
Jan 13 02:56:04 linux pptpd[19646]: CTRL: remote address = 192.168.1.1
Jan 13 02:56:04 linux pptpd[19646]: CTRL: pppd options file = /etc/ppp/options.pptpd
Jan 13 02:56:04 linux pptpd[19646]: CTRL: Client 212.192.251.48 control connection started
Jan 13 02:56:04 linux pptpd[19646]: CTRL: Received PPTP Control Message (type: 1)
Jan 13 02:56:04 linux pptpd[19646]: CTRL: Made a START CTRL CONN RPLY packet
Jan 13 02:56:04 linux pptpd[19646]: CTRL: I wrote 156 bytes to the client.
Jan 13 02:56:04 linux pptpd[19646]: CTRL: Sent packet to client
Jan 13 02:56:04 linux pptpd[19646]: CTRL: Received PPTP Control Message (type: 7)
Jan 13 02:56:04 linux pptpd[19646]: CTRL: Set parameters to 100000000 maxbps, 64 window size
Jan 13 02:56:04 linux pptpd[19646]: CTRL: Made a OUT CALL RPLY packet
Jan 13 02:56:04 linux pptpd[19646]: CTRL: Starting call (launching pppd, opening GRE)
Jan 13 02:56:04 linux pptpd[19646]: CTRL: pty_fd = 6
Jan 13 02:56:04 linux pptpd[19646]: CTRL: tty_fd = 7
Jan 13 02:56:04 linux pptpd[19646]: CTRL: I wrote 32 bytes to the client.
Jan 13 02:56:04 linux pptpd[19646]: CTRL: Sent packet to client
Jan 13 02:56:04 linux pptpd[19647]: CTRL (PPPD Launcher): program binary = /usr/sbin/pppd
Jan 13 02:56:04 linux pptpd[19647]: CTRL (PPPD Launcher): local address = 192.168.0.1
Jan 13 02:56:04 linux pptpd[19647]: CTRL (PPPD Launcher): remote address = 192.168.1.1
Jan 13 02:56:04 linux pppd[19647]: Plugin radius.so loaded.
Jan 13 02:56:04 linux pppd[19647]: RADIUS plugin initialized.
Jan 13 02:56:04 linux pppd[19647]: Plugin radattr.so loaded.
Jan 13 02:56:04 linux pppd[19647]: RADATTR plugin initialized.
Jan 13 02:56:04 linux pppd[19647]: pppd options in effect:
Jan 13 02:56:04 linux pppd[19647]: debug               # (from /etc/ppp/options.pptpd)
Jan 13 02:56:04 linux pppd[19647]: dump                # (from /etc/ppp/options.pptpd)
Jan 13 02:56:04 linux pppd[19647]: plugin radius.so            # (from /etc/ppp/options.pptpd)
Jan 13 02:56:04 linux pppd[19647]: plugin radattr.so           # (from /etc/ppp/options.pptpd)
Jan 13 02:56:04 linux pppd[19647]: +mschap-v2          # (from /etc/ppp/options.pptpd)
Jan 13 02:56:04 linux pppd[19647]: -pap                # (from /etc/ppp/options.pptpd)
Jan 13 02:56:04 linux pppd[19647]: 115200              # (from command line)
Jan 13 02:56:04 linux pppd[19647]: lock                # (from /etc/ppp/options)
Jan 13 02:56:04 linux pppd[19647]: crtscts             # (from /etc/ppp/options)
Jan 13 02:56:04 linux pppd[19647]: local               # (from command line)
Jan 13 02:56:04 linux pppd[19647]: asyncmap 0          # (from /etc/ppp/options)
Jan 13 02:56:04 linux pppd[19647]: lcp-echo-failure 4          # (from /etc/ppp/options)
Jan 13 02:56:04 linux pppd[19647]: lcp-echo-interval 30                # (from /etc/ppp/options)
Jan 13 02:56:04 linux pppd[19647]: hide-password               # (from /etc/ppp/options)
Jan 13 02:56:04 linux pppd[19647]: proxyarp            # (from /etc/ppp/options.pptpd)
Jan 13 02:56:04 linux pppd[19647]: 192.168.0.1:192.168.1.1             # (from command line)
Jan 13 02:56:04 linux pppd[19647]: require-mppe-128            # (from /etc/ppp/options.pptpd)
Jan 13 02:56:04 linux pppd[19647]: noipx               # (from /etc/ppp/options)
Jan 13 02:56:04 linux pppd[19647]: pppd 2.4.5 started by root, uid 0
Jan 13 02:56:04 linux pppd[19647]: using channel 275
Jan 13 02:56:04 linux pppd[19647]: Using interface ppp0
Jan 13 02:56:04 linux pppd[19647]: Connect: ppp0 <--> /dev/pts/0
Jan 13 02:56:04 linux pppd[19647]: sent [LCP ConfReq id=0x1 <asyncmap 0x0> <auth chap MD5> <magic 0xef49db15> <pcomp> <accomp>]
Jan 13 02:56:04 linux pptpd[19646]: GRE: Bad checksum from pppd.
Jan 13 02:56:04 linux pptpd[19646]: CTRL: Received PPTP Control Message (type: 15)
Jan 13 02:56:04 linux pptpd[19646]: CTRL: Got a SET LINK INFO packet with standard ACCMs
Jan 13 02:56:04 linux pptpd[19646]: GRE: accepting packet #0
Jan 13 02:56:04 linux pppd[19647]: rcvd [LCP ConfReq id=0x0 <mru 1400> <magic 0x58853230> <pcomp> <accomp> <callback CBCP>]
Jan 13 02:56:04 linux pppd[19647]: sent [LCP ConfRej id=0x0 <callback CBCP>]
Jan 13 02:56:04 linux pptpd[19646]: GRE: accepting packet #1
Jan 13 02:56:04 linux pppd[19647]: rcvd [LCP ConfReq id=0x1 <mru 1400> <magic 0x58853230> <pcomp> <accomp>]
Jan 13 02:56:04 linux pppd[19647]: sent [LCP ConfAck id=0x1 <mru 1400> <magic 0x58853230> <pcomp> <accomp>]
Jan 13 02:56:07 linux pppd[19647]: sent [LCP ConfReq id=0x1 <asyncmap 0x0> <auth chap MD5> <magic 0xef49db15> <pcomp> <accomp>]
Jan 13 02:56:07 linux pptpd[19646]: GRE: accepting packet #2
Jan 13 02:56:07 linux pppd[19647]: rcvd [LCP ConfAck id=0x1 <asyncmap 0x0> <auth chap MD5> <magic 0xef49db15> <pcomp> <accomp>]
Jan 13 02:56:07 linux pppd[19647]: sent [LCP EchoReq id=0x0 magic=0xef49db15]
Jan 13 02:56:07 linux pppd[19647]: sent [CHAP Challenge id=0xb3 <8ed17bf7dcf8ba86869398409e26d135fbb3>, name = "linux"]
Jan 13 02:56:07 linux pptpd[19646]: GRE: accepting packet #3
Jan 13 02:56:07 linux pptpd[19646]: CTRL: Received PPTP Control Message (type: 15)
Jan 13 02:56:07 linux pptpd[19646]: CTRL: Ignored a SET LINK INFO packet with real ACCMs!
Jan 13 02:56:07 linux pptpd[19646]: GRE: accepting packet #4
Jan 13 02:56:07 linux pptpd[19646]: GRE: accepting packet #5
Jan 13 02:56:07 linux pppd[19647]: rcvd [LCP Ident id=0x2 magic=0x58853230 "MSRASV5.20"]
Jan 13 02:56:07 linux pppd[19647]: rcvd [LCP Ident id=0x3 magic=0x58853230 "MSRAS-0-MI"]
Jan 13 02:56:07 linux pppd[19647]: rcvd [LCP Ident id=0x4 magic=0x58853230 "\37777777761\37777777614\37777777743\37777777641f\37777777656\001@\37777777647\37777777770v\37777777752O\37777777674^\013"]
Jan 13 02:56:07 linux pptpd[19646]: GRE: accepting packet #6
Jan 13 02:56:07 linux pppd[19647]: rcvd [LCP EchoRep id=0x0 magic=0x58853230]
Jan 13 02:56:07 linux pptpd[19646]: GRE: accepting packet #7
Jan 13 02:56:07 linux pppd[19647]: rcvd [CHAP Response id=0xb3 <c3d8f1013fd381f93e987a75b95f56a5>, name = "test"]
Jan 13 02:56:07 linux pppd[19647]: Fatal signal 11
Jan 13 02:56:07 linux pppd[19647]: RADATTR plugin removed file /var/run/radattr.ppp0.
Jan 13 02:56:07 linux pppd[19647]: Exit.
Jan 13 02:56:07 linux pptpd[19588]: MGR: Reaped child 19646
Jan 13 02:56:07 linux pptpd[19646]: GRE: read(fd=6,buffer=8058640,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 13 02:56:07 linux pptpd[19646]: CTRL: PTY read or GRE write failed (pty,gre)=(6,7)
Jan 13 02:56:07 linux pptpd[19646]: CTRL: Reaping child PPP[19647]
Jan 13 02:56:07 linux pptpd[19646]: CTRL: Client 10.0.0.1 control connection finished
Jan 13 02:56:07 linux pptpd[19646]: CTRL: Exiting now