i386/72972: FreeBSD 5.3 RC1 cause mpd PPTP connections packet lost

[LI Dong]

>Number:         72972
>Category:       i386
>Synopsis:       FreeBSD 5.3 RC1 cause mpd PPTP connections packet lost
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    freebsd-i386
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Thu Oct 21 18:00:45 GMT 2004
>Closed-Date:
>Last-Modified:
>Originator:     LI Dong
>Release:        FreeBSD 5.3 RC1
>Organization:
>Environment:
FreeBSD xxxxx 5.3-STABLE FreeBSD 5.3-STABLE #2: Wed Oct 20 17:27:03 CEST 2004     root at xxxxx:/usr/src/sys/i386/compile/ROUTER  i386
>Description:
After a pptp connection with mpd port, I found very serious packet lost.
I hope it was caused by a misconfiguration of mpd port.

mpd.conf:
---------------------------
default:
        load pptp0
pptp0:
        new -i ng0 pptp0 pptp0
        set ipcp ranges 172.16.1.254/32 172.16.1.100/32
        load pptp_standard
pptp_standard:
        set iface disable on-demand
        set iface enable proxy-arp
        set iface idle 1800
        set iface enable tcpmssfix
        set bundle enable multilink
        set link yes acfcomp protocomp
        set link no pap chap
        set link enable chap
        set link keep-alive 10 60
        #set link mtu 1460
        set ipcp yes vjcomp
        set ipcp dns 213.244.0.15
        set ipcp nbns 172.16.1.4
        set bundle enable compression
        set ccp yes mppc
        #set ccp yes mpp-e40
        set ccp no mpp-e40
        set ccp yes mpp-e128
        set ccp yes mpp-stateless
>How-To-Repeat:
install mpd under FreeBSD 5.3 RC1 (src/sys updated to Oct 20 stable)

>Fix:
      
>Release-Note:
>Audit-Trail:
>Unformatted: