Две площадки объединены туннелем. На одной стоит PPTP сервер на линуксе, на другой микротик, который цепляется к первому клиентским туннелем. За микротиком сетка 192.168.3.0/24. В линуксе нужно прописать маршрут. Делаем это динамически при подключении определенного пира. IP-адрес для пира постоянный. Итак, в файл /etc/ppp/ip-up дописываем:
#!/bin/sh
#
# This script is run by the pppd after the link is established.
# It uses run-parts to run scripts in /etc/ppp/ip-up.d, so to add routes,
# set IP address, run the mailq etc. you should create script(s) there.
#
# Be aware that other packages may include /etc/ppp/ip-up.d scripts (named
# after that package), so choose local script names with that in mind.
#
# This script is called with the following arguments:
# Arg Name Example
# $1 Interface name ppp0
# $2 The tty ttyS1
# $3 The link speed 38400
# $4 Local IP number 12.34.56.78
# $5 Peer IP number 12.34.56.99
# $6 Optional ``ipparam'' value foo
# The environment is cleared before executing this script
# so the path must be reset
PATH=/usr/local/sbin:/usr/sbin:/sbin:/usr/local/bin:/usr/bin:/bin
export PATH
# These variables are for the use of the scripts run by run-parts
PPP_IFACE="$1"
PPP_TTY="$2"
PPP_SPEED="$3"
PPP_LOCAL="$4"
PPP_REMOTE="$5"
PPP_IPPARAM="$6"
export PPP_IFACE PPP_TTY PPP_SPEED PPP_LOCAL PPP_REMOTE PPP_IPPARAM
# as an additional convenience, $PPP_TTYNAME is set to the tty name,
# stripped of /dev/ (if present) for easier matching.
PPP_TTYNAME=`/usr/bin/basename "$2"`
export PPP_TTYNAME
case "$5" in
172.26.100.42)
/sbin/route add 192.168.3.161/32 gw 172.26.100.42
;;
*)
esac
# If /var/log/ppp-ipupdown.log exists use it for logging.
if [ -e /var/log/ppp-ipupdown.log ]; then
exec > /var/log/ppp-ipupdown.log 2>&1
echo $0 $*
echo
fi
# This script can be used to override the .d files supplied by other packages.
if [ -x /etc/ppp/ip-up.local ]; then
exec /etc/ppp/ip-up.local "$*"
fi
run-parts /etc/ppp/ip-up.d \
--arg="$1" --arg="$2" --arg="$3" --arg="$4" --arg="$5" --arg="$6"
# if pon was called with the "quick" argument, stop pppd
if [ -e /var/run/ppp-quick ]; then
rm /var/run/ppp-quick
wait
kill $PPPD_PID
fi
Тут есть описание переменных, можно сделать это в отдельном файле ip-up.local. Да, чтобы одинаковые маршруты не плодились не забудьте прописать аналогичное в ip-down (route del).
#!/bin/sh
#
# This script is run by the pppd after the link is established.
# It uses run-parts to run scripts in /etc/ppp/ip-up.d, so to add routes,
# set IP address, run the mailq etc. you should create script(s) there.
#
# Be aware that other packages may include /etc/ppp/ip-up.d scripts (named
# after that package), so choose local script names with that in mind.
#
# This script is called with the following arguments:
# Arg Name Example
# $1 Interface name ppp0
# $2 The tty ttyS1
# $3 The link speed 38400
# $4 Local IP number 12.34.56.78
# $5 Peer IP number 12.34.56.99
# $6 Optional ``ipparam'' value foo
# The environment is cleared before executing this script
# so the path must be reset
PATH=/usr/local/sbin:/usr/sbin:/sbin:/usr/local/bin:/usr/bin:/bin
export PATH
# These variables are for the use of the scripts run by run-parts
PPP_IFACE="$1"
PPP_TTY="$2"
PPP_SPEED="$3"
PPP_LOCAL="$4"
PPP_REMOTE="$5"
PPP_IPPARAM="$6"
export PPP_IFACE PPP_TTY PPP_SPEED PPP_LOCAL PPP_REMOTE PPP_IPPARAM
# as an additional convenience, $PPP_TTYNAME is set to the tty name,
# stripped of /dev/ (if present) for easier matching.
PPP_TTYNAME=`/usr/bin/basename "$2"`
export PPP_TTYNAME
case "$5" in
172.26.100.42)
/sbin/route add 192.168.3.161/32 gw 172.26.100.42
;;
*)
esac
# If /var/log/ppp-ipupdown.log exists use it for logging.
if [ -e /var/log/ppp-ipupdown.log ]; then
exec > /var/log/ppp-ipupdown.log 2>&1
echo $0 $*
echo
fi
# This script can be used to override the .d files supplied by other packages.
if [ -x /etc/ppp/ip-up.local ]; then
exec /etc/ppp/ip-up.local "$*"
fi
run-parts /etc/ppp/ip-up.d \
--arg="$1" --arg="$2" --arg="$3" --arg="$4" --arg="$5" --arg="$6"
# if pon was called with the "quick" argument, stop pppd
if [ -e /var/run/ppp-quick ]; then
rm /var/run/ppp-quick
wait
kill $PPPD_PID
fi
Тут есть описание переменных, можно сделать это в отдельном файле ip-up.local. Да, чтобы одинаковые маршруты не плодились не забудьте прописать аналогичное в ip-down (route del).
