Hi,
On new USB stick WLAN interface (driver zd1211rw) it seems that the
'ip link set $DEVICE up' needs to be done before ESSID is set for the
card to come up at all. (On the other hand, for example, the old
orinoco_cs doesn't require this.)
Even though DHCP client (run after ESSID is set) brings up the link,
the WLAN card is not associated to the AP (the state as shown below),
and IP doesn't work yet.
zd1211rw people had the opinion that this is a problem with ifup:
"This is a distro bug - it should bring the interface up before using
it. Many drivers require the interface to be up before scanning is
possible, since for a lot of hardware, scanning is just transmission
and reception of frames so requires the entire MAC layer to be
activated just the same as if you were transmitting/receiving data."
Should this be fixed by setting the link up before setting ESSID in
ifup-wireless (or even before setting some other iwconfig options)?
Is there any drawback in doing so? (At least it seems to me that you
may not be able to specify a new MACADDR if this was done.)
Is there already a bug report on this (based on very quick search I
couldn't find one)?
eth1 IEEE 802.11b/g ESSID:"S" Nickname:"zd1211"
Mode:Managed Frequency:2.412 GHz Access Point: Invalid
Bit Rate=1 Mb/s
Encryption key:off
Link Quality:0 Signal level:0 Noise level:0
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
--
Pekka Savola "You each name yourselves king, yet the
Netcore Oy kingdom bleeds."
Systems. Networks. Security. -- George R.R. Martin: A Clash of Kings
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