Trouble setting configuration file (IB_CONFIG ignored?)

Hello,

I'm having trouble updating my configuration file and getting linux-gpib
to recognize the new configuration. My configuration file (for an NI
PCIe GPIB) is

```
interface {
    minor = 0
    board_type = "ni_pci"
    name = "gpib0"
    pad = 21
    master = yes
    pci_bus = 7
    pci_slot = 12
}
```

Running gpib_config seems to work fine. I run

```
sudo gpib_config -f /home/matt/.config/linux-gpib/gpib.conf
```

which exits without error. dmesg shows the following:

```
$ dmesg | tail
[163957.741639] gpib0: exiting autospoll thread
[163957.741787] mite: 0xf7504000 mapped to 0000000033271221
[163957.741795] mite: daq: 0xf7500000 mapped to 00000000d3bfa315
[163957.741811] tnt4882: irq 24
```

However, then running ibtest fails to open the gpib0 board:

```
$ sudo ibtest
Do you wish to open a (d)evice or an interface (b)oard?
        (you probably want to open a device): b
enter name of interface board (or device) you wish to open: gpib0
trying to open board named 'gpib0'
failed to open board
```

But, if I use the name "violet", which is the name for the interface
with minor 0 in the template configuration file, it appears to work
fine.

```
enter name of interface board (or device) you wish to open: violet
trying to open board named 'violet'
You can:
        w(a)it for an event
        write (c)ommand bytes to bus (system controller only)
        send (d)evice clear (device only)
        change remote (e)nable line (system controller only)
        (g)o to standby (release ATN line, system controller only)
        send (i)nterface clear (system controller only)
        ta(k)e control (assert ATN line, system controller only)
        get bus (l)ine status (board only)
        go to local (m)ode
        change end (o)f transmission configuration
        (q)uit
        (r)ead string
        perform (s)erial poll (device only)
        change (t)imeout on io operations
        request ser(v)ice (board only)
        (w)rite data string
        send group e(x)ecute trigger (device only)
: l
DAV off
NDAC on
NRFD off
IFC off
REN on
SRQ off
ATN on
EOI off
gpib status is:
ibsta = 0x130  < CMPL CIC ATN >
iberr= 0

ibcntl = 0
```

When I run ibtest, does it load the configuration from the configuration
file, or does gpib_config load the data that is then used by ibtest?

I thought it was possibly reloading the config, so I set IB_CONFIG:

```
$ echo $IB_CONFIG
/home/matt/.config/linux-gpib/gpib.conf
```

But ibtest still only responds to violet.

What am I doing wrong here?

Thanks
Matt