Persistente OpenVPN Verbindung (Reconnect, mehrere Netzwerkadapter)

client
dev tun
proto tcp
remote 46.xx.xx.xx 9666
resolv-retry infinite
nobind
user nobody
group nogroup
persist-key
persist-tun
keepalive 1 15
ca ca.crt
cert client.crt
key client.key
ns-cert-type server
comp-lzo
verb 5

ping -c 5 10.0.1.6 > echo "ok" || service openvpn restart

#!/usr/bin/expect

#exp_internal 1 # for debug

set timeout 5
set host [lindex $argv 0]
set port [lindex $argv 1]
set command [string tolower [lindex $argv 2]]
set param [lindex $argv 3]
log_user 0

if {[llength $argv] < 3} {
        send_user "Usage: ovpn_management.sh host port command (parameter)\n"
        exit 1
}

proc do_verbose {{level ""}} {
        # Send 'verb $level' command to set specified verbose level. Empty level returns current verbose level.
        send "verb $level\r"

        if {$level == ""} {
                expect {
                        timeout { send_user "Failed to get verbose level\n"; exit 1 }
                        -nocase "error" { send_user "Failed to get verbose level\n"; exit 1 }
                        -nocase -re "success: verb=(\[0-9]+)"
                }
                set level $expect_out(1,string)
        } else {
                # Wait for command response  (success / error)
                expect {
                        timeout { send_user "Failed to set verbose level\n"; exit 1 }
                        -nocase "error" { send_user "Failed to set verbose level\n"; exit 1 }
                        -nocase "success"
                }
        }

        return $level
}


# Start the telnet session
spawn telnet $host $port

# Wait for telnet connection to be ready
expect {
        timeout { send_user "Failed to get command prompt\n"; exit 1 }
        eof { send_user "Failed to connect to management console\n"; exit 1 }
        -nocase ">info:*"
}

switch -glob -- $command {
        -v      -
        -verb   -
        -verbose {
                set result [do_verbose $param]
                if {$result >= 0} {
                        send_user "Verbose level = $result\n"
                } else {
                        send_user "Failed to get verbose level\n"
                }
        }

        default {
                send_user "Unknown command '$command'\n"
                exit 1
        }
}


# Exit telnet session
send "quit\r"
close