Такая ситуация: есть mpd5 (pptp-сервер), клиенты - WindowsXР. Периодически в случайные промежутки времени по непонятным мне причинам рвётся соединение между клиентами и сервером.

Конфиг:
pptp_server_0:

        set ippool add pool1 192.168.1.50 192.168.1.99
        create bundle template B_pptp0
        set iface enable proxy-arp
        set iface enable tcpmssfix
        set ipcp yes vjcomp
        set ipcp ranges 192.168.50.88/32 ippool pool1
        set ipcp dns 192.168.50.20
        set ipcp nbns 192.168.50.20
        set bundle enable compression
        set ccp yes mppc
        set mppc yes e40
        set mppc yes e128
        set mppc yes stateless
        create link template L_pptp0 pptp
        set link action bundle B_pptp0
        set link enable multilink
        set link yes acfcomp protocomp
        set link no pap chap
        set link enable chap
        set link keep-alive 0 0
        set link mtu 1460
        set pptp self MyIP
        set link enable incoming

Лог:  
Nov 16 03:05:02 free mpd: [L_pptp0-2] PPTP call terminated
Nov 16 03:05:02 free mpd: [L_pptp0-2] Link: DOWN event
Nov 16 03:05:02 free mpd: [L_pptp0-2] LCP: Close event
Nov 16 03:05:02 free mpd: [L_pptp0-2] LCP: state change Opened --> Closing
Nov 16 03:05:02 free mpd: [L_pptp0-2] Link: Leave bundle "B_pptp0-2"
Nov 16 03:05:02 free mpd: [B_pptp0-2] Bundle: Status update: up 0 links, total b
andwidth 9600 bps
Nov 16 03:05:02 free mpd: [B_pptp0-2] IPCP: Close event
Nov 16 03:05:02 free mpd: [B_pptp0-2] IPCP: state change Opened --> Closing
Nov 16 03:05:02 free mpd: [B_pptp0-2] IPCP: SendTerminateReq #3
Nov 16 03:05:02 free mpd: [B_pptp0-2] IPCP: LayerDown
Nov 16 03:05:02 free mpd: [B_pptp0-2] IFACE: Down event
Nov 16 03:05:02 free mpd: [B_pptp0-2] CCP: Close event
Nov 16 03:05:02 free mpd: [B_pptp0-2] CCP: state change Opened --> Closing
Nov 16 03:05:02 free mpd: [B_pptp0-2] CCP: SendTerminateReq #3
Nov 16 03:05:02 free mpd: [B_pptp0-2] CCP: LayerDown
Nov 16 03:05:02 free mpd: [B_pptp0-2] IPCP: Down event
Nov 16 03:05:02 free mpd: [B_pptp0-2] IPCP: LayerFinish
Nov 16 03:05:02 free mpd: [B_pptp0-2] Bundle: No NCPs left. Closing links...
Nov 16 03:05:02 free mpd: [B_pptp0-2] IPCP: state change Closing --> Initial
Nov 16 03:05:02 free mpd: [B_pptp0-2] CCP: Down event
Nov 16 03:05:02 free mpd: [B_pptp0-2] CCP: LayerFinish
Nov 16 03:05:02 free mpd: [B_pptp0-2] CCP: state change Closing --> Initial
Nov 16 03:05:02 free mpd: [B_pptp0-2] Bundle: Shutdown
Nov 16 03:05:02 free mpd: [L_pptp0-2] LCP: SendTerminateReq #4
Nov 16 03:05:02 free mpd: [L_pptp0-2] LCP: LayerDown
Nov 16 03:05:02 free mpd: [L_pptp0-2] LCP: Down event
Nov 16 03:05:02 free mpd: [L_pptp0-2] LCP: LayerFinish
Nov 16 03:05:02 free mpd: [L_pptp0-2] LCP: state change Closing --> Initial
Nov 16 03:05:02 free mpd: [L_pptp0-2] Link: SHUTDOWN event
Nov 16 03:05:02 free mpd: [L_pptp0-2] Link: Shutdown