Add known issue about Broadcom BCM43224 adapters vs MAC spoofing.

wiki/src/news/version_1.2.3.mdwn

@@ -44,6 +44,11 @@ for technical details.
 
 * It is [[hard to exchange files with the I2P Browser|support/known_issues#i2p_browser]].
 
+* Tails' MAC spoofing feature disables
+  [[Broadcom BCM43224 wireless adapters|support/known_issues#bcm43224]]
+  by default. This network adapter can be found in the MacBook Air
+  5,1.
+
 * [[Longstanding|support/known_issues]] known issues.
 
 # I want to try it or to upgrade!

wiki/src/support/known_issues.mdwn

@@ -188,6 +188,25 @@ The following commands, run from the GRUB shell, might be helpful:
     chainloader +1
     boot
 
+Other hardware issues
+=====================
+
+<a id="bcm43224"></a>
+
+Broadcom BCM43224 802.11a/b/g/n wireless network adapter
+--------------------------------------------------------
+
+The Broadcom Corporation BCM43224 802.11a/b/g/n wireless network
+adapter is known to not be able to
+[[spoof its MAC address|doc/first_steps/startup_options/mac_spoofing]]. Tails
+enables MAC spoofing by default, and will disable any network adapter
+it fails to spoof. To make it work you must
+[[disable Tails' MAC spoofing feature|doc/first_steps/startup_options/mac_spoofing#disable]];
+please read the documentation carefully and make sure you understand
+the consequences before doing so.
+
+This network adapter can, for instance, be found in the MacBook Air 5,1.
+
 Security issues
 ===============