NM and 802.11a

[Joel Goguen <jgoguen jgoguen ca>]

I'm having some trouble using a 802.11a network.  I can connect to a
802.11g network fine, but I can't even see the 802.11a network.  They're
being broadcast from the same access points, and if I search for them
using iwlist the a/g all show up.  Unfortunately, there's no area where
only 802.11a is broadcast so I don't know if NM would pick it up with no
802.11g network in range.

Is there a way I can specify that I want NM to connect to 802.11a for a
specific set of SSIDs (or even just one SSID) and whatever is available
for other SSIDs?  I'm using 0.6.5 on Ubuntu Gutsy if that's any help.

Here's what I get from iwlist:
ath0    Scan completed :
        Cell 01 - Address: 00:18:B0:82:55:C0
                ESSID:"Wireless UNB"
                Mode:Master
                Frequency:2.412 GHz (Channel 1)
                Quality=24/70  Signal level=-71 dBm  Noise level=-95 dBm
                Encryption key:on
                Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 6 Mb/s; 9 Mb/s
                          11 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s
                          48 Mb/s; 54 Mb/s
                Extra:bcn_int=100
                IE: WPA Version 1
                    Group Cipher : WEP-40
                    Pairwise Ciphers (1) : WEP-40
                    Authentication Suites (1) : 802.1x
Extra:wme_ie=dd180050f2020101010003a4000027a4000042435e0062322f00
<snip other 2.4GHz range results>
        Cell 08 - Address: 00:18:B0:81:CD:41
                ESSID:"Wireless UNB"
                Mode:Master
                Frequency:5.26 GHz (Channel 52)
                Quality=32/70  Signal level=-63 dBm  Noise level=-95 dBm
                Encryption key:on
                Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s
                          36 Mb/s; 48 Mb/s; 54 Mb/s
                Extra:bcn_int=100
                IE: WPA Version 1
                    Group Cipher : WEP-40
                    Pairwise Ciphers (1) : WEP-40
                    Authentication Suites (1) : 802.1x
Extra:wme_ie=dd180050f2020101010003a4000027a4000042435e0062322f00


-- 
Joel Goguen
http://jgoguen.net/
The goal of Computer Science is to build something that
will last at least until we've finished building it.