updated to latest upstream

vpnc-script

@@ -2,7 +2,7 @@
 #
 # Originally part of vpnc source code:
 # © 2005-2012 Maurice Massar, Jörg Mayer, Antonio Borneo et al.
-# © 2009-2012 David Woodhouse <dwmw2@infradead.org>
+# © 2009-2022 David Woodhouse <dwmw2@infradead.org>, Daniel Lenski <dlenski@gmail.com> et al.
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -22,31 +22,37 @@
 #
 # List of parameters passed through environment
 #* reason                       -- why this script was called, one of: pre-init connect disconnect reconnect attempt-reconnect
-#* VPNGATEWAY                   -- vpn gateway address (always present)
+#* VPNGATEWAY                   -- VPN gateway address (always present)
+#* VPNPID                       -- PID of the process controlling the VPN (OpenConnect v9.0+)
 #* TUNDEV                       -- tunnel device (always present)
+#* IDLE_TIMEOUT                 -- gateway's idle timeout in seconds (OpenConnect v8.06+); unused
+#* LOG_LEVEL                    -- log level; ERROR=0, INFO=1, DEBUG=2, TRACE=3 (OpenConnect v9.0+)
 #* INTERNAL_IP4_ADDRESS         -- address (always present)
-#* INTERNAL_IP4_MTU             -- mtu (often unset)
+#* 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_DNS             -- list of DNS servers
-#* INTERNAL_IP4_NBNS            -- list of wins 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_DNS              -- dns search domain list
+#* CISCO_SPLIT_DNS              -- DNS search domain list
 #* 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_PROTOCOL  -- protocol (often just 0); unused
-#* CISCO_SPLIT_INC_%d_SPORT     -- source port (often just 0)
+#* CISCO_SPLIT_INC_%d_SPORT     -- source port (often just 0); unused
-#* CISCO_SPLIT_INC_%d_DPORT     -- destination port (often just 0)
+#* CISCO_SPLIT_INC_%d_DPORT     -- destination port (often just 0); unused
 #* 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
+#
+# The split tunnel variables above have *_EXC* counterparts for network
+# addresses to be excluded from the VPN tunnel.
 
 # FIXMEs:
 
@@ -60,20 +66,20 @@
 # 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
+#   without getting restored later. We should explicitly 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
+# 2) Parse DNS packets going out via tunnel and redirect them to original DNS-server
 
 # ======== For test logging (CI/CD will uncomment automatically) =========
 
 #TRACE# echo "------------------"
 #TRACE# echo "vpnc-script environment:"
-#TRACE# env | egrep '^(CISCO_|INTERNAL_IP|VPNGATEWAY|TUNDEV|reason)' | sort
+#TRACE# env | grep -E '^(CISCO_|INTERNAL_IP|VPNGATEWAY|TUNDEV|IDLE_TIMEOUT|reason)' | sort
 #TRACE# echo "------------------"
 #TRACE# set -x
 
@@ -84,9 +90,22 @@ PATH=/sbin:/usr/sbin:$PATH
 OS="`uname -s`"
 
 HOOKS_DIR=/etc/vpnc
-DEFAULT_ROUTE_FILE=/var/run/vpnc/defaultroute.${PPID}
+
-DEFAULT_ROUTE_FILE_IPV6=/var/run/vpnc/defaultroute_ipv6.${PPID}
+# Use the PID of the controlling process (vpnc or OpenConnect) to
-RESOLV_CONF_BACKUP=/var/run/vpnc/resolv.conf-backup
+# uniquely identify this VPN connection. Normally, the parent process
+# is a shell, and the grandparent's PID is the relevant one.
+# OpenConnect v9.0+ provides VPNPID, so we don't need to determine it.
+if [ -z "$VPNPID" ]; then
+    VPNPID=$PPID
+    PCMD=`ps -c -o cmd= -p $PPID`
+    case "$PCMD" in
+        *sh) VPNPID=`ps -o ppid= -p $PPID` ;;
+    esac
+fi
+
+DEFAULT_ROUTE_FILE=/var/run/vpnc/defaultroute.${VPNPID}
+DEFAULT_ROUTE_FILE_IPV6=/var/run/vpnc/defaultroute_ipv6.${VPNPID}
+RESOLV_CONF_BACKUP=/var/run/vpnc/resolv.conf-backup.${VPNPID}
 SCRIPTNAME=`basename $0`
 
 # some systems, eg. Darwin & FreeBSD, prune /var/run on boot
@@ -102,7 +121,7 @@ else
 fi
 
 if [ "$OS" = "Linux" ]; then
-	IPROUTE="`which ip 2> /dev/null | grep '^/'`"
+	IPROUTE="`command -v ip | grep '^/'`"
 	ifconfig_syntax_ptp="pointopoint"
 	route_syntax_gw="gw"
 	route_syntax_del="del"
@@ -111,10 +130,10 @@ if [ "$OS" = "Linux" ]; then
 	route_syntax_inet6_host="-6"
 	route_syntax_inet6_net="-6"
 	ifconfig_syntax_add_inet6="add"
-	ifconfig_syntax_del="del"
+	ifconfig_syntax_del() { case "$1" in *:*) echo del "$1" ;; *) echo 0.0.0.0 ;; esac; }
 	netstat_syntax_ipv6="-6"
 else
-	# iproute2 is Linux only; if `which ip` returns something on another OS, it's likely an unrelated tool
+	# iproute2 is Linux only; if `command -v ip` returns something on another OS, it's likely an unrelated tool
 	# (see https://github.com/dlenski/openconnect/issues/132#issuecomment-470475009)
 	IPROUTE=""
 	ifconfig_syntax_ptp=""
@@ -124,7 +143,7 @@ else
 	route_syntax_inet6="-inet6"
 	route_syntax_inet6_host="-inet6 -host"
 	route_syntax_inet6_net="-inet6 -net"
-	ifconfig_syntax_del="delete"
+	ifconfig_syntax_del() { case "$1" in *:*) echo inet6 "$1" delete ;; *) echo "$1" delete ;; esac; }
 	ifconfig_syntax_add_inet6="inet6"
 	netstat_syntax_ipv6="-f inet6"
 fi
@@ -136,11 +155,13 @@ else
 	ifconfig_syntax_ptpv6=""
 fi
 
-grep '^hosts' /etc/nsswitch.conf 2>/dev/null|grep resolve >/dev/null 2>&1 && command systemd-resolve --status >/dev/null 2>&1
+RESOLVEDENABLED=0
+grep '^hosts' /etc/nsswitch.conf 2>/dev/null|grep resolve >/dev/null 2>&1
 if [ $? = 0 ];then
-	RESOLVEDENABLED=1
+	command resolvectl status >/dev/null 2>&1 || command systemd-resolve --status >/dev/null 2>&1
-else
+	if [ $? = 0 ];then
-	RESOLVEDENABLED=0
+		RESOLVEDENABLED=1
+	fi
 fi
 
 if [ -r /etc/openwrt_release ] && [ -n "$OPENWRT_INTERFACE" ]; then
@@ -156,8 +177,8 @@ elif [ -x /usr/bin/busctl ] && [ ${RESOLVEDENABLED} = 1 ]; then
 	# For systemd-resolved (version 229 and above)
 	MODIFYRESOLVCONF=modify_resolved_manager_old
 	RESTORERESOLVCONF=restore_resolved_manager_old
-elif [ -x /sbin/resolvconf ] && [ `basename $(readlink /sbin/resolvconf)` != resolvectl ]; then
+elif [ -x /sbin/resolvconf ] && [ "`basename $(readlink /sbin/resolvconf) 2> /dev/null`" != resolvectl ]; then
-	# Optional tool on Debian, Ubuntu, Gentoo and FreeBSD
+	# Optional tool on Debian, Ubuntu, Gentoo, FreeBSD and DragonFly BSD
 	# (ignored if symlink to resolvctl, created by some versions of systemd-resolved)
 	MODIFYRESOLVCONF=modify_resolvconf_manager
 	RESTORERESOLVCONF=restore_resolvconf_manager
@@ -174,6 +195,10 @@ elif [ -x /sbin/modify_resolvconf ]; then
 elif [ -x /usr/sbin/unbound-control ] && /usr/sbin/unbound-control status > /dev/null 2>&1; then
 	MODIFYRESOLVCONF=modify_resolvconf_unbound
 	RESTORERESOLVCONF=restore_resolvconf_unbound
+elif [ -x /usr/sbin/rcctl ] && /usr/sbin/rcctl check resolvd >/dev/null; then
+	# OpenBSD's resolvd by sending route messages
+	MODIFYRESOLVCONF=modify_resolvconf_resolvd
+	RESTORERESOLVCONF=restore_resolvconf_resolvd
 else # Generic for any OS
 	MODIFYRESOLVCONF=modify_resolvconf_generic
 	RESTORERESOLVCONF=restore_resolvconf_generic
@@ -186,9 +211,9 @@ run_hooks() {
 	HOOK="$1"
 
 	if [ -d ${HOOKS_DIR}/${HOOK}.d ]; then
-	    for script in ${HOOKS_DIR}/${HOOK}.d/* ; do
+		for script in ${HOOKS_DIR}/${HOOK}.d/* ; do
-		[ -f $script ] && . $script
+			[ -f $script ] && . $script
-	    done
+		done
 	fi
 }
 
@@ -223,56 +248,47 @@ do_ifconfig() {
 
 	# If the netmask is provided, it contains the address _and_ netmask
 	if [ -n "$INTERNAL_IP6_ADDRESS" ] && [ -z "$INTERNAL_IP6_NETMASK" ]; then
-	    INTERNAL_IP6_NETMASK="$INTERNAL_IP6_ADDRESS/128"
+		INTERNAL_IP6_NETMASK="$INTERNAL_IP6_ADDRESS/128"
 	fi
 	if [ -n "$INTERNAL_IP6_NETMASK" ]; then
-	    if [ -n "$IPROUTE" ]; then
+		if [ -n "$IPROUTE" ]; then
-		$IPROUTE -6 addr add $INTERNAL_IP6_NETMASK dev $TUNDEV
+			$IPROUTE -6 addr add $INTERNAL_IP6_NETMASK dev $TUNDEV
-	    else
+		else
-		# Unlike for Legacy IP, we don't specify the dest_address
+			# Unlike for Legacy IP, we don't specify the dest_address
-		# here on *BSD. OpenBSD for one will refuse to accept
+			# here on *BSD. OpenBSD for one will refuse to accept
-		# incoming packets to that address if we do.
+			# incoming packets to that address if we do.
-		# OpenVPN does the same (gives dest_address for Legacy IP
+			# OpenVPN does the same (gives dest_address for Legacy IP
-		# but not for IPv6).
+			# but not for IPv6).
-		# Only Solaris needs it; hence $ifconfig_syntax_ptpv6
+			# Only Solaris needs it; hence $ifconfig_syntax_ptpv6
-		ifconfig "$TUNDEV" $ifconfig_syntax_add_inet6 $INTERNAL_IP6_NETMASK $ifconfig_syntax_ptpv6 mtu $MTU up
+			ifconfig "$TUNDEV" $ifconfig_syntax_add_inet6 $INTERNAL_IP6_NETMASK $ifconfig_syntax_ptpv6 mtu $MTU up
-	    fi
+		fi
 	fi
 }
 
-destroy_tun_device() {
-	case "$OS" in
-	NetBSD|OpenBSD) # and probably others...
-		ifconfig "$TUNDEV" destroy
-		;;
-	FreeBSD)
-		ifconfig "$TUNDEV" destroy > /dev/null 2>&1 &
-		;;
-	esac
-}
-
 # =========== route handling ====================================
 
 if [ -n "$IPROUTE" ]; then
 	fix_ip_get_output () {
 		sed -e 's/ /\n/g' | \
-		    sed -ne "1 s|\$|${1}|p;/via/{N;p};/dev/{N;p};/src/{N;p};/mtu/{N;p};/metric/{N;p}"
+		    sed -ne "1 s|\$|${1}|p;/via/{N;p};/dev/{N;p};/src/{N;p};/mtu/{N;p};/metric/{N;p};/onlink/{p}"
 	}
 
-	set_vpngateway_route() {
+        # returns all routes to a destination *except* those through $TUNDEV,
-		$IPROUTE route add `$IPROUTE route get "$VPNGATEWAY" | fix_ip_get_output`
+        # sorted by increasing metric (with absent metric as last)
-		$IPROUTE route flush cache 2>/dev/null
+        list_non_loopback_routes () {
-	}
+            echo "$1" | grep -q : && FAMILY=-6 ROOT=::/0 || FAMILY=-4 ROOT=0/0
+		# put metric in front, sort by metric, then chop off first two fields (metric and destination)
+		$IPROUTE $FAMILY route show to "$1" root "$ROOT" |
+		    awk '/dev '"$TUNDEV"'/ { next; } { printf "%s %s\n", (match($0, /metric ([^ ]+)/) ? substr($0, RSTART+7, RLENGTH-7) : 4294967295), $0; }' |
+		    sort -n | cut -d' ' -f3-
+        }
 
-        set_vpngateway_route_attempt_reconnect() {
+	set_vpngateway_route() {
 		# We'll attempt to add a host route to the gateway through every route that matches
 		# its address (excluding those through TUNDEV because the goal is to avoid loopback).
+		echo "$VPNGATEWAY" | grep -q : && FAMILY=-6 || FAMILY=-4
 
-		echo "$VPNGATEWAY" | grep -q : && FAMILY=-6 ROOT=::/0 || FAMILY=-4 ROOT=0/0
+		list_non_loopback_routes "$VPNGATEWAY" |
-		# put metric in front, sort by metric, then chop off first two fields (metric and destination)
-		$IPROUTE $FAMILY route show to "$VPNGATEWAY" root "$ROOT" |
-		    awk '/dev '"$TUNDEV"'/ { next; } { printf "%s %s\n", (match($0, /metric ([^ ]+)/) ? substr($0, RSTART+7, RLENGTH-7) : 4294967295), $0; }' |
-		    sort -n | cut -d' ' -f3- |
 		while read LINE ; do
 			# We do not want to use 'replace', since a route to the gateway that already
 			# exists is mostly likely the correct one (e.g. the case of a reconnect attempt
@@ -280,7 +296,7 @@ if [ -n "$IPROUTE" ]; then
 			$IPROUTE $FAMILY route add `echo "$VPNGATEWAY $LINE" | fix_ip_get_output` 2>/dev/null
 		done
 		$IPROUTE $FAMILY route flush cache 2>/dev/null
-        }
+	}
 
 	del_vpngateway_route() {
 		$IPROUTE route $route_syntax_del "$VPNGATEWAY"
@@ -313,13 +329,19 @@ if [ -n "$IPROUTE" ]; then
 		NETWORK="$1"
 		NETMASK="$2"
 		NETMASKLEN="$3"
-		$IPROUTE route add `$IPROUTE route get "$NETWORK" | fix_ip_get_output "/$NETMASKLEN"`
+
-		$IPROUTE route flush cache 2>/dev/null
+		echo "$1" | grep -q : && FAMILY=-6 || FAMILY=-4
+
+		list_non_loopback_routes "$NETWORK/$NETMASKLEN" |
+		while read LINE ; do
+			$IPROUTE $FAMILY route add `echo "$NETWORK/$NETMASKLEN $LINE" | fix_ip_get_output` 2>/dev/null
+		done
+		$IPROUTE $FAMILY route flush cache 2>/dev/null
 	}
 
 	del_exclude_route() {
 		# FIXME: In theory, this could delete existing routes which are
-		# identical to split-exclude routes specificed by VPNGATEWAY
+		# identical to split-exclude routes specified by VPNGATEWAY
 		NETWORK="$1"
 		NETMASK="$2"
 		NETMASKLEN="$3"
@@ -360,21 +382,18 @@ if [ -n "$IPROUTE" ]; then
 		else
 			$IPROUTE -6 route replace "$NETWORK/$NETMASKLEN" dev "$NETDEV"
 		fi
-		$IPROUTE route flush cache 2>/dev/null
+		$IPROUTE -6 route flush cache 2>/dev/null
 	}
 
 	set_ipv6_exclude_route() {
-		# add explicit route to keep current routing for this target
-		# (keep traffic separate from VPN tunnel)
 		NETWORK="$1"
 		NETMASKLEN="$2"
-		$IPROUTE -6 route add `$IPROUTE route get "$NETWORK" | fix_ip_get_output "/$NETMASKLEN"`
+		set_exclude_route "$NETWORK" nomask "$NETMASKLEN"
-		$IPROUTE route flush cache 2>/dev/null
 	}
 
 	reset_ipv6_default_route() {
 		$IPROUTE -6 route del default dev "$TUNDEV"
-		$IPROUTE route flush cache 2>/dev/null
+		$IPROUTE -6 route flush cache 2>/dev/null
 	}
 
 	del_ipv6_network_route() {
@@ -387,7 +406,7 @@ if [ -n "$IPROUTE" ]; then
 
 	del_ipv6_exclude_route() {
 		# FIXME: In theory, this could delete existing routes which are
-		# identical to split-exclude routes specificed by VPNGATEWAY
+		# identical to split-exclude routes specified by VPNGATEWAY
 		NETWORK="$1"
 		NETMASKLEN="$2"
 		$IPROUTE -6 route del "$NETWORK/$NETMASKLEN"
@@ -395,12 +414,12 @@ if [ -n "$IPROUTE" ]; then
 	}
 else # use route command
 	get_default_gw() {
-		# isn't -n supposed to give --numeric output?
+		# Intended behavior, starting with `netstat -r -n` output:
-		# apperently not...
+		# - keep lines starting with 'default' or '0.0.0.0', but exclude bogus routes '0.0.0.0/nn' where nn != 0
-		# Get rid of lines containing IPv6 addresses (':')
+		# - remove lines containing IPv6 addresses (':')
-		# Get rid of lines for link-local routes (https://superuser.com/a/1067742)
+		# - remove lines for link-local routes (https://superuser.com/a/1067742)
-		# Get rid of lines containing $TUNDEV (we don't want loopback)
+		# - remove lines containing $TUNDEV (we don't want loopback)
-		netstat -r -n | awk '/:/ { next; } /link\#/ { next; } /\s'"$TUNDEV"'(\s|$)/ { next; } /^(default|0\.0\.0\.0)/ { print $2; exit; }'
+		netstat -r -n | awk '/:/ { next; } /link#/ { next; } /[[:space:]]'"$TUNDEV"'([[:space:]]|$)/ { next; } /^(default|0\.0\.0\.0([[:space:]]|\/0))/ { print $2; exit; }'
 	}
 
 	set_vpngateway_route() {
@@ -413,10 +432,6 @@ else # use route command
 		esac
 	}
 
-        set_vpngateway_route_attempt_reconnect() {
-		set_vpngateway_route
-        }
-
 	del_vpngateway_route() {
 		case "$VPNGATEWAY" in
 		*:*)	route $route_syntax_del $route_syntax_inet6_host "$VPNGATEWAY" $route_syntax_gw "`get_ipv6_default_gw`";;
@@ -447,8 +462,10 @@ else # use route command
 		NETWORK="$1"
 		NETMASK="$2"
 		NETMASKLEN="$3"
+		DEFAULTGW="${DEFAULTGW:-`get_default_gw`}"
 		if [ -z "$DEFAULTGW" ]; then
-			DEFAULTGW="`get_default_gw`"
+			echo "cannot find route for exclude route $NETWORK/$NETMASKLEN, ignoring" >&2
+			return
 		fi
 		# Add explicit route to keep traffic for this target separate
 		# from tunnel. FIXME: We use default gateway - this is our best
@@ -486,10 +503,13 @@ else # use route command
 	}
 
 	get_ipv6_default_gw() {
-		# isn't -n supposed to give --numeric output?
+		# Intended behavior, starting with `netstat -r -n` IPv6 output:
-		# apperently not...
+		# - keep lines starting with 'default' or '::'
+		# - append %$interface to link-local routes (fe80::/10)
+	        # - remove lines for loopback interface (lo)
+		# - remove lines containing $TUNDEV (we don't want loopback)
 		# FIXME: is there a better way to exclude loopback routes than filtering interface /^lo/?
-		netstat -r -n $netstat_syntax_ipv6 | awk '/^(default|::\/0)/ { if ($NF!~/^lo/) { print ($2~/^fe[89ab]/ ? $2"%"$NF : $2); } }'
+		netstat -r -n $netstat_syntax_ipv6 | awk '/^(default|::\/0)/ { if ($NF!~/^lo/ && $NF!~/'"$TUNDEV"'([[:space:]]|$)/) { print ($2~/^fe[89ab]/ ? $2"%"$NF : $2); } }'
 	}
 
 	set_ipv6_default_route() {
@@ -519,10 +539,15 @@ else # use route command
 	set_ipv6_exclude_route() {
 		NETWORK="$1"
 		NETMASK="$2"
+		IPV6DEFAULTGW="${IPV6DEFAULTGW:-`get_ipv6_default_gw`}"
+		if [ -z "$IPV6DEFAULTGW" ]; then
+			echo "cannot find route for exclude route $NETWORK/$NETMASKLEN, ignoring" >&2
+			return
+		fi
 		# Add explicit route to keep traffic for this target separate
 		# from tunnel. FIXME: We use default gateway - this is our best
 		# guess in absence of "ip" command to query effective route.
-		route add $route_syntax_inet6_net "$NETWORK/$NETMASK" "`get_ipv6_default_gw`" $route_syntax_interface
+		route add $route_syntax_inet6_net "$NETWORK/$NETMASK" "$IPV6DEFAULTGW" $route_syntax_interface
 		:
 	}
 
@@ -881,30 +906,24 @@ restore_resolvconf_unbound() {
 	fi
 }
 
-# ========= Toplevel state handling  =======================================
+# === resolv.conf handling via resolvd =========
 
-kernel_is_2_6_or_above() {
+modify_resolvconf_resolvd() {
-	case `uname -r` in
+	/sbin/route nameserver $TUNDEV $INTERNAL_IP4_DNS $INTERNAL_IP6_DNS
-		1.*|2.[012345]*)
+}
-			return 1
+
-			;;
+restore_resolvconf_resolvd() {
-		*)
+	/sbin/route nameserver $TUNDEV
-			return 0
-			;;
-	esac
 }
 
+# ========= Toplevel state handling  =======================================
+
 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
@@ -912,18 +931,12 @@ do_pre_init() {
 				[ -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 $(seq 100) ; do
-				for x in `seq 100` ; do
+				(exec 6<> /dev/net/tun) > /dev/null 2>&1 && break;
-					(exec 6<> /dev/net/tun) > /dev/null 2>&1 && break;
+				sleep 0.1
-					sleep 0.1
+			done
-				done
-			fi
 		fi
-	elif [ "$OS" = "FreeBSD" ]; then
+	elif [ "$OS" = "FreeBSD" -o "$OS" = "DragonFly" ]; then
-		if ! kldstat -q -m if_tun > /dev/null; then
-			kldload if_tun
-		fi
-
 		if ! ifconfig $TUNDEV > /dev/null; then
 			ifconfig $TUNDEV create
 		fi
@@ -1054,7 +1067,10 @@ do_disconnect() {
 			eval NETWORK="\${CISCO_SPLIT_EXC_${i}_ADDR}"
 			eval NETMASK="\${CISCO_SPLIT_EXC_${i}_MASK}"
 			eval NETMASKLEN="\${CISCO_SPLIT_EXC_${i}_MASKLEN}"
-			del_exclude_route "$NETWORK" "$NETMASK" "$NETMASKLEN"
+			case "$NETWORK" in
+				0.*|127.*|169.254.*) ;; # ignoring non-forwardable exclude route
+				*) del_exclude_route "$NETWORK" "$NETMASK" "$NETMASKLEN" ;;
+			esac
 			i=`expr $i + 1`
 		done
 	fi
@@ -1105,23 +1121,32 @@ do_disconnect() {
 		if [ -n "$INTERNAL_IP6_NETMASK" ]; then
 			$IPROUTE -6 addr del $INTERNAL_IP6_NETMASK dev $TUNDEV
 		fi
+		$IPROUTE link set dev "$TUNDEV" down
 	else
 		if [ -n "$INTERNAL_IP4_ADDRESS" ]; then
-			ifconfig "$TUNDEV" 0.0.0.0
+			ifconfig "$TUNDEV" `ifconfig_syntax_del "$INTERNAL_IP4_ADDRESS"`
 		fi
 		if [ -n "$INTERNAL_IP6_ADDRESS" ] && [ -z "$INTERNAL_IP6_NETMASK" ]; then
 			INTERNAL_IP6_NETMASK="$INTERNAL_IP6_ADDRESS/128"
 		fi
 		if [ -n "$INTERNAL_IP6_NETMASK" ]; then
-			ifconfig "$TUNDEV" inet6 $ifconfig_syntax_del $INTERNAL_IP6_NETMASK
+			ifconfig "$TUNDEV" `ifconfig_syntax_del "$INTERNAL_IP6_NETMASK"`
 		fi
+		ifconfig "$TUNDEV" down
 	fi
 
-	destroy_tun_device
+	case "$OS" in
+	NetBSD|OpenBSD) # and probably others...
+		ifconfig "$TUNDEV" destroy
+		;;
+	FreeBSD|DragonFly)
+		ifconfig "$TUNDEV" destroy > /dev/null 2>&1 &
+		;;
+	esac
 }
 
 do_attempt_reconnect() {
-        set_vpngateway_route_attempt_reconnect
+	set_vpngateway_route
 }
 
 #### Main

vpnc-script.spec

@@ -1,9 +1,9 @@
-%global git_date 20201205
+%global git_date 20220404
-%global git_commit_hash cdbd5b
+%global git_commit_hash 40a8c62c
 
 Name:		vpnc-script
 Version:	%{git_date}
-Release:	4.git%{git_commit_hash}%{?dist}
+Release:	1.git%{git_commit_hash}%{?dist}
 
 Summary:	Routing setup script for vpnc and openconnect
 BuildArch:	noarch
@@ -34,6 +34,9 @@ install -m 0755 vpnc-script \
 %{_sysconfdir}/vpnc/vpnc-script
 
 %changelog
+* Mon Apr 04 2022 Nikos Mavrogiannopoulos <n.mavrogiannopoulos@gmail.com> - 20220404-1.git40a8c62c
+- Updated to latest upstream version
+
 * Sat Jan 22 2022 Fedora Release Engineering <releng@fedoraproject.org> - 20201205-4.gitcdbd5b
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_36_Mass_Rebuild