i have the work around for the following error :
step 1: see what you need to do is, firstly take the backup of the vpnc script through the below command :
sudo cp /etc/vpnc/vpnc-script /etc/vpnc/vpnc-script.bck
Step 2: now what you need to do is open the vpnc-script by any editor love to work with(vi, vim , emacs, gedit).
sudo gedit /etc/vpnc/vpnc-script
and remove the content inside it and copy the content below :
#!/bin/sh
# List of parameters passed through environment
#* reason -- why this script was called, one of: pre-init connect disconnect
#* VPNGATEWAY -- vpn gateway address (always present)
#* TUNDEV -- tunnel device (always present)
#* INTERNAL_IP4_ADDRESS -- address (always present)
#* INTERNAL_IP4_MTU -- mtu (often unset)
#* INTERNAL_IP4_NETMASK -- netmask (often unset)
#* INTERNAL_IP4_NETMASKLEN -- netmask length (often unset)
#* INTERNAL_IP4_NETADDR -- address of network (only present if netmask is set)
#* INTERNAL_IP4_DNS -- list of dns servers
#* INTERNAL_IP4_NBNS -- list of wins servers
#* INTERNAL_IP6_ADDRESS -- IPv6 address
#* INTERNAL_IP6_NETMASK -- IPv6 netmask
#* INTERNAL_IP6_DNS -- IPv6 list of dns servers
#* CISCO_DEF_DOMAIN -- default domain name
#* CISCO_BANNER -- banner from server
#* CISCO_SPLIT_INC -- number of networks in split-network-list
#* CISCO_SPLIT_INC_%d_ADDR -- network address
#* CISCO_SPLIT_INC_%d_MASK -- subnet mask (for example: 255.255.255.0)
#* CISCO_SPLIT_INC_%d_MASKLEN -- subnet masklen (for example: 24)
#* CISCO_SPLIT_INC_%d_PROTOCOL -- protocol (often just 0)
#* CISCO_SPLIT_INC_%d_SPORT -- source port (often just 0)
#* CISCO_SPLIT_INC_%d_DPORT -- destination port (often just 0)
#* CISCO_IPV6_SPLIT_INC -- number of networks in IPv6 split-network-list
#* CISCO_IPV6_SPLIT_INC_%d_ADDR -- IPv6 network address
#* CISCO_IPV6_SPLIT_INC_$%d_MASKLEN -- IPv6 subnet masklen
# FIXMEs:
# Section A: route handling
# 1) The 3 values CISCO_SPLIT_INC_%d_PROTOCOL/SPORT/DPORT are currently being ignored
# In order to use them, we'll probably need os specific solutions
# * Linux: iptables -t mangle -I PREROUTING <conditions> -j ROUTE --oif $TUNDEV
# This would be an *alternative* to changing the routes (and thus 2) and 3)
# shouldn't be relevant at all)
# 2) There are two different functions to set routes: generic routes and the
# default route. Why isn't the defaultroute handled via the generic route case?
# 3) In the split tunnel case, all routes but the default route might get replaced
# without getting restored later. We should explicitely check and save them just
# like the defaultroute
# 4) Replies to a dhcp-server should never be sent into the tunnel
# Section B: Split DNS handling
# 1) Maybe dnsmasq can do something like that
# 2) Parse dns packets going out via tunnel and redirect them to original dns-server
#env | sort
#set -x
# =========== script (variable) setup ====================================
PATH=/sbin:/usr/sbin:$PATH
OS="`uname -s`"
HOOKS_DIR=/etc/vpnc
DEFAULT_ROUTE_FILE=/var/run/vpnc/defaultroute
RESOLV_CONF_BACKUP=/var/run/vpnc/resolv.conf-backup
SCRIPTNAME=`basename $0`
# some systems, eg. Darwin & FreeBSD, prune /var/run on boot
if [ ! -d "/var/run/vpnc" ]; then
mkdir -p /var/run/vpnc
[ -x /sbin/restorecon ] && /sbin/restorecon /var/run/vpnc
fi
# stupid SunOS: no blubber in /usr/local/bin ... (on stdout)
IPROUTE="`which ip | grep '^/'`" 2> /dev/null
if ifconfig --help 2>&1 | grep BusyBox > /dev/null; then
ifconfig_syntax_inet=""
else
ifconfig_syntax_inet="inet"
fi
if [ "$OS" = "Linux" ]; then
ifconfig_syntax_ptp="pointopoint"
route_syntax_gw="gw"
route_syntax_del="del"
route_syntax_netmask="netmask"
else
ifconfig_syntax_ptp=""
route_syntax_gw=""
route_syntax_del="delete"
route_syntax_netmask="-netmask"
fi
if [ "$OS" = "SunOS" ]; then
route_syntax_interface="-interface"
ifconfig_syntax_ptpv6="$INTERNAL_IP6_ADDRESS"
else
route_syntax_interface=""
ifconfig_syntax_ptpv6=""
fi
if [ -r /etc/openwrt_release ] && [ -n "$OPENWRT_INTERFACE" ]; then
. /etc/functions.sh
include /lib/network
MODIFYRESOLVCONF=modify_resolvconf_openwrt
RESTORERESOLVCONF=restore_resolvconf_openwrt
elif [ -x /sbin/resolvconf ]; then # Optional tool on Debian, Ubuntu, Gentoo
MODIFYRESOLVCONF=modify_resolvconf_manager
RESTORERESOLVCONF=restore_resolvconf_manager
elif [ -x /sbin/netconfig ]; then # tool on Suse after 11.1
MODIFYRESOLVCONF=modify_resolvconf_suse_netconfig
RESTORERESOLVCONF=restore_resolvconf_suse_netconfig
elif [ -x /sbin/modify_resolvconf ]; then # Mandatory tool on Suse earlier than 11.1
MODIFYRESOLVCONF=modify_resolvconf_suse
RESTORERESOLVCONF=restore_resolvconf_suse
else # Generic for any OS
MODIFYRESOLVCONF=modify_resolvconf_generic
RESTORERESOLVCONF=restore_resolvconf_generic
fi
# =========== script hooks =================================================
run_hooks() {
HOOK="$1"
if [ -d ${HOOKS_DIR}/${HOOK}.d ]; then
for script in ${HOOKS_DIR}/${HOOK}.d/* ; do
[ -f $script ] && . $script
done
fi
}
# =========== tunnel interface handling ====================================
do_ifconfig() {
if [ -n "$INTERNAL_IP4_MTU" ]; then
MTU=$INTERNAL_IP4_MTU
elif [ -n "$IPROUTE" ]; then
MTUDEV=`$IPROUTE route get "$VPNGATEWAY" | sed -ne 's/^.*dev \([a-z0-9]*\).*$/\1/p'`
MTU=`$IPROUTE link show "$MTUDEV" | sed -ne 's/^.*mtu \([[:digit:]]\+\).*$/\1/p'`
if [ -n "$MTU" ]; then
MTU=`expr $MTU - 88`
fi
fi
if [ -z "$MTU" ]; then
MTU=1412
fi
# Point to point interface require a netmask of 255.255.255.255 on some systems
if [ -n "$IPROUTE" ]; then
$IPROUTE link set dev "$TUNDEV" up mtu "$MTU"
$IPROUTE addr add "$INTERNAL_IP4_ADDRESS/255.255.255.255" peer "$INTERNAL_IP4_ADDRESS" dev "$TUNDEV"
else
ifconfig "$TUNDEV" ${ifconfig_syntax_inet} "$INTERNAL_IP4_ADDRESS" $ifconfig_syntax_ptp "$INTERNAL_IP4_ADDRESS" netmask 255.255.255.255 mtu ${MTU} up
fi
if [ -n "$INTERNAL_IP4_NETMASK" ]; then
set_network_route $INTERNAL_IP4_NETADDR $INTERNAL_IP4_NETMASK $INTERNAL_IP4_NETMASKLEN
fi
# If the netmask is provided, it contains the address _and_ netmask
if [ -n "$INTERNAL_IP6_ADDRESS" ] && [ -z "$INTERNAL_IP6_NETMASK" ]; then
INTERNAL_IP6_NETMASK="$INTERNAL_IP6_ADDRESS/128"
fi
if [ -n "$INTERNAL_IP6_NETMASK" ]; then
if [ -n "$IPROUTE" ]; then
$IPROUTE -6 addr add $INTERNAL_IP6_NETMASK dev $TUNDEV
else
# Unlike for Legacy IP, we don't specify the dest_address
# here on *BSD. OpenBSD for one will refuse to accept
# incoming packets to that address if we do.
# OpenVPN does the same (gives dest_address for Legacy IP
# but not for IPv6).
# Only Solaris needs it; hence $ifconfig_syntax_ptpv6
ifconfig "$TUNDEV" inet6 $INTERNAL_IP6_NETMASK $ifconfig_syntax_ptpv6 mtu $MTU up
fi
fi
}
destroy_tun_device() {
case "$OS" in
NetBSD|FreeBSD) # and probably others...
ifconfig "$TUNDEV" destroy
;;
esac
}
# =========== route handling ====================================
if [ -n "$IPROUTE" ]; then
fix_ip_get_output () {
sed -e 's/ /\n/g' | \
sed -ne '1p;/via/{N;p};/dev/{N;p};/src/{N;p};/mtu/{N;p}'
}
set_vpngateway_route() {
$IPROUTE route add `$IPROUTE route get "$VPNGATEWAY" | fix_ip_get_output`
$IPROUTE route flush cache
}
del_vpngateway_route() {
$IPROUTE route $route_syntax_del "$VPNGATEWAY"
$IPROUTE route flush cache
}
set_default_route() {
$IPROUTE route | grep '^default' | fix_ip_get_output > "$DEFAULT_ROUTE_FILE"
$IPROUTE route replace default dev "$TUNDEV"
$IPROUTE route flush cache
}
set_network_route() {
NETWORK="$1"
NETMASK="$2"
NETMASKLEN="$3"
$IPROUTE route replace "$NETWORK/$NETMASKLEN" dev "$TUNDEV"
$IPROUTE route flush cache
}
reset_default_route() {
if [ -s "$DEFAULT_ROUTE_FILE" ]; then
$IPROUTE route replace `cat "$DEFAULT_ROUTE_FILE"`
$IPROUTE route flush cache
rm -f -- "$DEFAULT_ROUTE_FILE"
fi
}
del_network_route() {
NETWORK="$1"
NETMASK="$2"
NETMASKLEN="$3"
$IPROUTE route $route_syntax_del "$NETWORK/$NETMASKLEN" dev "$TUNDEV"
$IPROUTE route flush cache
}
set_ipv6_default_route() {
# We don't save/restore IPv6 default route; just add a higher-priority one.
$IPROUTE -6 route add default dev "$TUNDEV" metric 1
$IPROUTE -6 route flush cache
}
set_ipv6_network_route() {
NETWORK="$1"
NETMASKLEN="$2"
$IPROUTE -6 route replace "$NETWORK/$NETMASKLEN" dev "$TUNDEV"
$IPROUTE route flush cache
}
reset_ipv6_default_route() {
$IPROUTE -6 route del default dev "$TUNDEV"
$IPROUTE route flush cache
}
del_ipv6_network_route() {
NETWORK="$1"
NETMASKLEN="$2"
$IPROUTE -6 route del "$NETWORK/$NETMASKLEN" dev "$TUNDEV"
$IPROUTE -6 route flush cache
}
else # use route command
get_default_gw() {
# isn't -n supposed to give --numeric output?
# apperently not...
# Get rid of lines containing IPv6 addresses (':')
netstat -r -n | awk '/:/ { next; } /^(default|0\.0\.0\.0)/ { print $2; }'
}
set_vpngateway_route() {
route add -host "$VPNGATEWAY" $route_syntax_gw "`get_default_gw`"
}
del_vpngateway_route() {
route $route_syntax_del -host "$VPNGATEWAY" $route_syntax_gw "`get_default_gw`"
}
set_default_route() {
DEFAULTGW="`get_default_gw`"
echo "$DEFAULTGW" > "$DEFAULT_ROUTE_FILE"
route $route_syntax_del default $route_syntax_gw "$DEFAULTGW"
route add default $route_syntax_gw "$INTERNAL_IP4_ADDRESS" $route_syntax_interface
}
set_network_route() {
NETWORK="$1"
NETMASK="$2"
NETMASKLEN="$3"
del_network_route "$NETWORK" "$NETMASK" "$NETMASKLEN"
route add -net "$NETWORK" $route_syntax_netmask "$NETMASK" $route_syntax_gw "$INTERNAL_IP4_ADDRESS" $route_syntax_interface
}
reset_default_route() {
if [ -s "$DEFAULT_ROUTE_FILE" ]; then
route $route_syntax_del default $route_syntax_gw "`get_default_gw`" $route_syntax_interface
route add default $route_syntax_gw `cat "$DEFAULT_ROUTE_FILE"`
rm -f -- "$DEFAULT_ROUTE_FILE"
fi
}
del_network_route() {
case "$OS" in
Linux|NetBSD|Darwin|SunOS) # and probably others...
# routes are deleted automatically on device shutdown
return
;;
esac
NETWORK="$1"
NETMASK="$2"
NETMASKLEN="$3"
route $route_syntax_del -net "$NETWORK" $route_syntax_netmask "$NETMASK" $route_syntax_gw "$INTERNAL_IP4_ADDRESS"
}
set_ipv6_default_route() {
route add -inet6 default "$INTERNAL_IP6_ADDRESS" $route_syntax_interface
}
set_ipv6_network_route() {
NETWORK="$1"
NETMASK="$2"
route add -inet6 -net "$NETWORK/$NETMASK" "$INTERNAL_IP6_ADDRESS" $route_syntax_interface
:
}
reset_ipv6_default_route() {
route $route_syntax_del -inet6 default "$INTERNAL_IP6_ADDRESS"
:
}
del_ipv6_network_route() {
NETWORK="$1"
NETMASK="$2"
route $route_syntax_del -inet6 "$NETWORK/$NETMASK" "$INTERNAL_IP6_ADDRESS"
:
}
fi
# =========== resolv.conf handling ====================================
# =========== resolv.conf handling for any OS =========================
modify_resolvconf_generic() {
grep '^#@VPNC_GENERATED@' /etc/resolv.conf > /dev/null 2>&1 || cp -- /etc/resolv.conf "$RESOLV_CONF_BACKUP"
NEW_RESOLVCONF="#@VPNC_GENERATED@ -- this file is generated by vpnc
# and will be overwritten by vpnc
# as long as the above mark is intact"
# Remember the original value of CISCO_DEF_DOMAIN we need it later
CISCO_DEF_DOMAIN_ORIG="$CISCO_DEF_DOMAIN"
# Don't step on INTERNAL_IP4_DNS value, use a temporary variable
INTERNAL_IP4_DNS_TEMP="$INTERNAL_IP4_DNS"
exec 6< "$RESOLV_CONF_BACKUP"
while read LINE <&6 ; do
case "$LINE" in
nameserver*)
if [ -n "$INTERNAL_IP4_DNS_TEMP" ]; then
read ONE_NAMESERVER INTERNAL_IP4_DNS_TEMP <<-EOF
$INTERNAL_IP4_DNS_TEMP
EOF
LINE="nameserver $ONE_NAMESERVER"
else
LINE=""
fi
;;
search*)
if [ -n "$CISCO_DEF_DOMAIN" ]; then
LINE="$LINE $CISCO_DEF_DOMAIN"
CISCO_DEF_DOMAIN=""
fi
;;
domain*)
if [ -n "$CISCO_DEF_DOMAIN" ]; then
LINE="domain $CISCO_DEF_DOMAIN"
CISCO_DEF_DOMAIN=""
fi
;;
esac
NEW_RESOLVCONF="$NEW_RESOLVCONF
$LINE"
done
exec 6<&-
for i in $INTERNAL_IP4_DNS_TEMP ; do
NEW_RESOLVCONF="$NEW_RESOLVCONF
nameserver $i"
done
if [ -n "$CISCO_DEF_DOMAIN" ]; then
NEW_RESOLVCONF="$NEW_RESOLVCONF
search $CISCO_DEF_DOMAIN"
fi
echo "$NEW_RESOLVCONF" > /etc/resolv.conf
if [ "$OS" = "Darwin" ]; then
case "`uname -r`" in
# Skip for pre-10.4 systems
4.*|5.*|6.*|7.*)
;;
# 10.4 and later require use of scutil for DNS to work properly
*)
OVERRIDE_PRIMARY=""
if [ -n "$CISCO_SPLIT_INC" ]; then
if [ $CISCO_SPLIT_INC -lt 1 ]; then
# Must override for correct default route
# Cannot use multiple DNS matching in this case
OVERRIDE_PRIMARY='d.add OverridePrimary # 1'
fi
fi
# Uncomment the following if/fi pair to use multiple
# DNS matching when available. When multiple DNS matching
# is present, anything reading the /etc/resolv.conf file
# directly will probably not work as intended.
#if [ -z "$CISCO_DEF_DOMAIN_ORIG" ]; then
# Cannot use multiple DNS matching without a domain
OVERRIDE_PRIMARY='d.add OverridePrimary # 1'
#fi
scutil >/dev/null 2>&1 <<-EOF
open
d.init
d.add ServerAddresses * $INTERNAL_IP4_DNS
set State:/Network/Service/$TUNDEV/DNS
d.init
# next line overrides the default gateway and breaks split routing
# d.add Router $INTERNAL_IP4_ADDRESS
d.add Addresses * $INTERNAL_IP4_ADDRESS
d.add SubnetMasks * 255.255.255.255
d.add InterfaceName $TUNDEV
$OVERRIDE_PRIMARY
set State:/Network/Service/$TUNDEV/IPv4
close
EOF
if [ -n "$CISCO_DEF_DOMAIN_ORIG" ]; then
scutil >/dev/null 2>&1 <<-EOF
open
get State:/Network/Service/$TUNDEV/DNS
d.add DomainName $CISCO_DEF_DOMAIN_ORIG
d.add SearchDomains * $CISCO_DEF_DOMAIN_ORIG
d.add SupplementalMatchDomains * $CISCO_DEF_DOMAIN_ORIG
set State:/Network/Service/$TUNDEV/DNS
close
EOF
fi
;;
esac
fi
}
restore_resolvconf_generic() {
if [ ! -f "$RESOLV_CONF_BACKUP" ]; then
return
fi
grep '^#@VPNC_GENERATED@' /etc/resolv.conf > /dev/null 2>&1 && cat "$RESOLV_CONF_BACKUP" > /etc/resolv.conf
rm -f -- "$RESOLV_CONF_BACKUP"
if [ "$OS" = "Darwin" ]; then
case "`uname -r`" in
# Skip for pre-10.4 systems
4.*|5.*|6.*|7.*)
;;
# 10.4 and later require use of scutil for DNS to work properly
*)
scutil >/dev/null 2>&1 <<-EOF
open
remove State:/Network/Service/$TUNDEV/IPv4
remove State:/Network/Service/$TUNDEV/DNS
close
EOF
;;
esac
fi
}
# === resolv.conf handling via /sbin/netconfig (Suse 11.1) =====================
# Suse provides a script that modifies resolv.conf. Use it because it will
# restart/reload all other services that care about it (e.g. lwresd). [unclear if this is still true, but probably --mlk]
modify_resolvconf_suse_netconfig()
{
/sbin/netconfig modify -s vpnc -i "$TUNDEV" <<-EOF
INTERFACE='$TUNDEV'
DNSSERVERS='$INTERNAL_IP4_DNS'
DNSDOMAIN='$CISCO_DEF_DOMAIN'
EOF
}
# Restore resolv.conf to old contents on Suse
restore_resolvconf_suse_netconfig()
{
/sbin/netconfig remove -s vpnc -i "$TUNDEV"
}
# === resolv.conf handling via /sbin/modify_resolvconf (Suse) =====================
# Suse provides a script that modifies resolv.conf. Use it because it will
# restart/reload all other services that care about it (e.g. lwresd).
modify_resolvconf_suse()
{
FULL_SCRIPTNAME=`readlink -f $0`
RESOLV_OPTS=''
test -n "$INTERNAL_IP4_DNS" && RESOLV_OPTS="-n \"$INTERNAL_IP4_DNS\""
test -n "$CISCO_DEF_DOMAIN" && RESOLV_OPTS="$RESOLV_OPTS -d $CISCO_DEF_DOMAIN"
test -n "$RESOLV_OPTS" && eval /sbin/modify_resolvconf modify -s vpnc -p $SCRIPTNAME -f $FULL_SCRIPTNAME -e $TUNDEV $RESOLV_OPTS -t \"This file was created by $SCRIPTNAME\"
}
# Restore resolv.conf to old contents on Suse
restore_resolvconf_suse()
{
FULL_SCRIPTNAME=`readlink -f $0`
/sbin/modify_resolvconf restore -s vpnc -p $SCRIPTNAME -f $FULL_SCRIPTNAME -e $TUNDEV
}
# === resolv.conf handling via UCI (OpenWRT) =========
modify_resolvconf_openwrt() {
add_dns $OPENWRT_INTERFACE $INTERNAL_IP4_DNS
}
restore_resolvconf_openwrt() {
remove_dns $OPENWRT_INTERFACE
}
# === resolv.conf handling via /sbin/resolvconf (Debian, Ubuntu, Gentoo)) =========
modify_resolvconf_manager() {
NEW_RESOLVCONF=""
for i in $INTERNAL_IP4_DNS; do
NEW_RESOLVCONF="$NEW_RESOLVCONF
nameserver $i"
done
if [ -n "$CISCO_DEF_DOMAIN" ]; then
NEW_RESOLVCONF="$NEW_RESOLVCONF
domain $CISCO_DEF_DOMAIN"
fi
echo "$NEW_RESOLVCONF" | /sbin/resolvconf -a $TUNDEV
}
restore_resolvconf_manager() {
/sbin/resolvconf -d $TUNDEV
}
# ========= Toplevel state handling =======================================
kernel_is_2_6_or_above() {
case `uname -r` in
1.*|2.[012345]*)
return 1
;;
*)
return 0
;;
esac
}
do_pre_init() {
if [ "$OS" = "Linux" ]; then
if (exec 6<> /dev/net/tun) > /dev/null 2>&1 ; then
:
else # can't open /dev/net/tun
test -e /proc/sys/kernel/modprobe && `cat /proc/sys/kernel/modprobe` tun 2>/dev/null
# fix for broken devfs in kernel 2.6.x
if [ "`readlink /dev/net/tun`" = misc/net/tun \
-a ! -e /dev/net/misc/net/tun -a -e /dev/misc/net/tun ] ; then
ln -sf /dev/misc/net/tun /dev/net/tun
fi
# make sure tun device exists
if [ ! -e /dev/net/tun ]; then
mkdir -p /dev/net
mknod -m 0640 /dev/net/tun c 10 200
[ -x /sbin/restorecon ] && /sbin/restorecon /dev/net/tun
fi
# workaround for a possible latency caused by udev, sleep max. 10s
if kernel_is_2_6_or_above ; then
for x in `seq 100` ; do
(exec 6<> /dev/net/tun) > /dev/null 2>&1 && break;
sleep 0.1
done
fi
fi
elif [ "$OS" = "FreeBSD" ]; then
if [ ! -e /dev/tun ]; then
kldload if_tun
fi
elif [ "$OS" = "GNU/kFreeBSD" ]; then
if [ ! -e /dev/tun ]; then
kldload if_tun
fi
elif [ "$OS" = "NetBSD" ]; then
:
elif [ "$OS" = "OpenBSD" ]; then
:
elif [ "$OS" = "SunOS" ]; then
:
elif [ "$OS" = "Darwin" ]; then
:
fi
}
do_connect() {
if [ -n "$CISCO_BANNER" ]; then
echo "Connect Banner:"
echo "$CISCO_BANNER" | while read LINE ; do echo "|" "$LINE" ; done
echo
fi
set_vpngateway_route
do_ifconfig
if [ -n "$CISCO_SPLIT_INC" ]; then
i=0
while [ $i -lt $CISCO_SPLIT_INC ] ; do
eval NETWORK="\${CISCO_SPLIT_INC_${i}_ADDR}"
eval NETMASK="\${CISCO_SPLIT_INC_${i}_MASK}"
eval NETMASKLEN="\${CISCO_SPLIT_INC_${i}_MASKLEN}"
if [ $NETWORK != "0.0.0.0" ]; then
set_network_route "$NETWORK" "$NETMASK" "$NETMASKLEN"
else
set_default_route
fi
i=`expr $i + 1`
done
for i in $INTERNAL_IP4_DNS ; do
echo "$i" | grep : >/dev/null || \
set_network_route "$i" "255.255.255.255" "32"
done
elif [ -n "$INTERNAL_IP4_ADDRESS" ]; then
set_default_route
fi
if [ -n "$CISCO_IPV6_SPLIT_INC" ]; then
i=0
while [ $i -lt $CISCO_IPV6_SPLIT_INC ] ; do
eval NETWORK="\${CISCO_IPV6_SPLIT_INC_${i}_ADDR}"
eval NETMASKLEN="\${CISCO_IPV6_SPLIT_INC_${i}_MASKLEN}"
if [ $NETMASKLEN -lt 128 ]; then
set_ipv6_network_route "$NETWORK" "$NETMASKLEN"
else
set_ipv6_default_route
fi
i=`expr $i + 1`
done
for i in $INTERNAL_IP4_DNS ; do
if echo "$i" | grep : >/dev/null; then
set_ipv6_network_route "$i" "128"
fi
done
elif [ -n "$INTERNAL_IP6_NETMASK" -o -n "$INTERNAL_IP6_ADDRESS" ]; then
set_ipv6_default_route
fi
if [ -n "$INTERNAL_IP4_DNS" ]; then
$MODIFYRESOLVCONF
fi
}
do_disconnect() {
if [ -n "$CISCO_SPLIT_INC" ]; then
i=0
while [ $i -lt $CISCO_SPLIT_INC ] ; do
eval NETWORK="\${CISCO_SPLIT_INC_${i}_ADDR}"
eval NETMASK="\${CISCO_SPLIT_INC_${i}_MASK}"
eval NETMASKLEN="\${CISCO_SPLIT_INC_${i}_MASKLEN}"
if [ $NETWORK != "0.0.0.0" ]; then
# FIXME: This doesn't restore previously overwritten
# routes.
del_network_route "$NETWORK" "$NETMASK" "$NETMASKLEN"
else
reset_default_route
fi
i=`expr $i + 1`
done
for i in $INTERNAL_IP4_DNS ; do
del_network_route "$i" "255.255.255.255" "32"
done
else
reset_default_route
fi
if [ -n "$CISCO_IPV6_SPLIT_INC" ]; then
i=0
while [ $i -lt $CISCO_IPV6_SPLIT_INC ] ; do
eval NETWORK="\${CISCO_IPV6_SPLIT_INC_${i}_ADDR}"
eval NETMASKLEN="\${CISCO_IPV6_SPLIT_INC_${i}_MASKLEN}"
if [ $NETMASKLEN -eq 0 ]; then
reset_ipv6_default_route
else
del_ipv6_network_route "$NETWORK" "$NETMASKLEN"
fi
i=`expr $i + 1`
done
for i in $INTERNAL_IP6_DNS ; do
del_ipv6_network_route "$i" "128"
done
elif [ -n "$INTERNAL_IP6_NETMASK" -o -n "$INTERNAL_IP6_ADDRESS" ]; then
reset_ipv6_default_route
fi
del_vpngateway_route
if [ -n "$INTERNAL_IP4_DNS" ]; then
$RESTORERESOLVCONF
fi
destroy_tun_device
}
#### Main
if [ -z "$reason" ]; then
echo "this script must be called from vpnc" 1>&2
exit 1
fi
case "$reason" in
pre-init)
run_hooks pre-init
do_pre_init
;;
connect)
run_hooks connect
do_connect
run_hooks post-connect
;;
disconnect)
run_hooks disconnect
do_disconnect
run_hooks post-disconnect
;;
reconnect)
run_hooks reconnect
;;
*)
echo "unknown reason '$reason'. Maybe vpnc-script is out of date" 1>&2
exit 1
;;
esac
exit 0
****************************************************************************************
save and close the vpnc-script file.
Step 3: run the vpnc now, you want get the ipid error now.
Note: see if you replace the vpnc-script file as done in above example you will get error because it change the flag set onto the file. So, we just only need to change is the content of the vpnc-script file.
Cheers!!
-Simranjeet
