Теряется пинг к PPTP серверу у подключенных клиентов

####################
lock
debug
name pptpd
proxyarp
####################
refuse-pap
refuse-chap
refuse-mschap
require-mschap-v2
require-mppe-128
####################
ms-dns 10.0.0.4
ms-wins 10.0.0.4
####################
mtu 1000
mru 1000
####################
ipcp-accept-local
ipcp-accept-remote
lcp-echo-failure 3
#lcp-echo-failure 5
#lcp-echo-interval 10
lcp-echo-interval 5
####################
nobsdcomp
nodeflate
nodefaultroute
####################

###############################################################################
# $Id: options.pptpd,v 1.5 2004/04/23 07:11:33 quozl Exp $
#
# Sample Poptop PPP options file /etc/ppp/options.pptpd
# Options used by PPP when a connection arrives from a client.
# This file is pointed to by /etc/pptpd.conf option keyword.
# Changes are effective on the next connection.  See "man pppd".
#
# You are expected to change this file to suit your system.  As
# packaged, it requires PPP 2.4.2 and the kernel MPPE module.
###############################################################################
# Authentication
# Name of the local system for authentication purposes
# (must match the second field in /etc/ppp/chap-secrets entries)
name pptpd
# Strip the domain prefix from the username before authentication.
# (applies if you use pppd with chapms-strip-domain patch)
#chapms-strip-domain
# Encryption
# (There have been multiple versions of PPP with encryption support,
# choose with of the following sections you will use.)
# BSD licensed ppp-2.4.2 upstream with MPPE only, kernel module ppp_mppe.o
# {{{
refuse-pap
refuse-chap
refuse-mschap
# Require the peer to authenticate itself using MS-CHAPv2 [Microsoft
# Challenge Handshake Authentication Protocol, Version 2] authentication.
require-mschap-v2
# Require MPPE 128-bit encryption
# (note that MPPE requires the use of MSCHAP-V2 during authentication)
require-mppe-128
# }}}
# OpenSSL licensed ppp-2.4.1 fork with MPPE only, kernel module mppe.o
# {{{
#-chap
#-chapms
# Require the peer to authenticate itself using MS-CHAPv2 [Microsoft
# Challenge Handshake Authentication Protocol, Version 2] authentication.
#+chapms-v2
# Require MPPE encryption
# (note that MPPE requires the use of MSCHAP-V2 during authentication)
#mppe-40        # enable either 40-bit or 128-bit, not both
#mppe-128
#mppe-stateless
# }}}
# Network and Routing
# If pppd is acting as a server for Microsoft Windows clients, this
# option allows pppd to supply one or two DNS (Domain Name Server)
# addresses to the clients.  The first instance of this option
# specifies the primary DNS address; the second instance (if given)
# specifies the secondary DNS address.
ms-dns 10.0.0.1
# If pppd is acting as a server for Microsoft Windows or "Samba"
# clients, this option allows pppd to supply one or two WINS (Windows
# Internet Name Services) server addresses to the clients.  The first
# instance of this option specifies the primary WINS address; the
# second instance (if given) specifies the secondary WINS address.
ms-wins 10.0.0.1
# Add an entry to this system's ARP [Address Resolution Protocol]
# table with the IP address of the peer and the Ethernet address of this
# system.  This will have the effect of making the peer appear to other
# systems to be on the local ethernet.
# (you do not need this if your PPTP server is responsible for routing
# packets to the clients -- James Cameron)
proxyarp
# Logging
# Enable connection debugging facilities.
# (see your syslog configuration for where pppd sends to)
debug
# Print out all the option values which have been set.
# (often requested by mailing list to verify options)
# dump
# Miscellaneous
# Create a UUCP-style lock file for the pseudo-tty to ensure exclusive
# access.
lock
# Disable BSD-Compress compression
nobsdcomp

debug
localip 10.0.0.254
remoteip 10.0.0.200-250

[root@fw ppp]# ls -l /etc/ppp/
total 100
-rwxr-x---  1 root root  131 Dec 26  2005 adsl-lost
-rwxr-x---  1 root root  199 Jun 26  2001 callback-client
-rwxr-x---  1 root root  229 Jun 26  2001 callback-server
-rwxr-x---  1 root root  334 Jun 26  2001 callback-users
-rw-------  1 root root 1620 Jun  9 10:12 chap-secrets
-rw-------  1 root root 2114 May 26  2006 connect-errors
-rw-r--r--  1 root root  938 Dec 26  2005 firewall-masq
-rw-r--r--  1 root root 2130 May 21  2002 firewall-masq-iptables
-rw-r--r--  1 root root  836 Dec 26  2005 firewall-standalone
-rw-r--r--  1 root root 1470 May 21  2002 firewall-standalone-iptables
-rwxr-xr-x  1 root root 1334 Jul 29  2005 ip-down
drwxr-xr-x  2 root root   48 Jan  3  2005 ip-down.d
-rwxr-xr-x  1 root root 4685 May 26  2006 ip-up
drwxr-xr-x  2 root root   72 May 18  2006 ip-up.d
-rwxr-xr-x  1 root root  710 May 26  2006 ip-up.local
-rw-r--r--  1 root root   44 Apr 28  2009 options
-rw-r--r--  1 root root  454 Mar 28 03:16 options.pptp
-rw-r--r--  1 root root 3339 Apr 28  2009 options.pptpd
-rw-------  1 root root   77 Jun 23  1995 pap-secrets
drwx--x--x  2 root root  136 May 26  2006 peers
-rw-r--r--  1 root root    0 Sep 27  2006 ping
-rw-r--r--  1 root root 4631 Apr 28  2009 pppoe.conf
-rw-r--r--  1 root root   48 Jun  4 11:18 pptpd.conf