
[bad_if] => Array
        (
            [0] => voip-null
            [1] => virtual-
            [2] => unrouted
            [3] => eobc
            [4] => lp0
            [5] => -atm
            [6] => faith0
            [7] => container
            [8] => async
            [9] => plip
            [10] => -physical
            [11] => container
            [12] => unrouted
            [13] => bluetooth
            [14] => isatap
            [15] => ras
            [16] => qos
            [17] => span rp
            [18] => span sp
            [19] => sslvpn
            [20] => pppoe-
        )

    [bad_iftype] => Array
        (
            [0] => voiceEncap
            [1] => voiceEM
            [2] => voiceFXO
            [3] => voiceFXS
            [4] => voiceOverAtm
            [5] => voiceOverFrameRelay
            [6] => voiceOverIp
            [7] => ds0
            [8] => ds1
            [9] => ds3
            [10] => atmSubInterface
            [11] => aal5
            [12] => shdsl
            [13] => mpls
            [14] => usb
        )

    [bad_if_regexp] => Array
        (
            [0] => /^ng[0-9]+$/
            [1] => /^sl[0-9]/
        )