Very annoyed in OS X, that after the establishment of VPN-connections, you had to manually are forwarding some subnets inside VPN. After a while it got tired and was written a little script that is executed automatically immediately after the VPN-connection is established.
$ sudo nano -w /etc/ppp/ip-up
#!/bin/sh
# When the ppp link comes up, this script is called with the following parameters
# $1 the interface name used by pppd (e.g. ppp0)
# $2 the tty device name
# $3 the tty device speed
# $4 the local IP address for the interface
# $5 the remote IP address
# $6 the parameter specified by the 'ipparam' option to pppd
IFNAME="$1"
IPLOCAL="$4"
IPREMOTE="$5"
if [ "${IPREMOTE}" == "10.9.1.1" ]; then
/sbin/route add -net 10.1 -interface ${IFNAME}
/sbin/route add -net 10.2 -interface ${IFNAME}
/sbin/route add -net 10.9 -interface ${IFNAME}
/sbin/route add -host 10.20.30.40/32 -interface ${IFNAME}
fi
$ sudo chmod +x /etc/ppp/ip-up