* Your kernel source contains an incompatible version of the
 * ieee80211 subsystem, which needs to be removed before
 * ieee80211-1.1.13 can be installed. This can be accomplished by running:
 *
 *   # /bin/sh /usr/portage/net-wireless/ieee80211/files/remove-old /usr/src/linux
 *   # /bin/sh /usr/portage/net-wireless/ieee80211/files/remove-old /lib/modules/2.6.18-gentoo-r6/build
 *
 * Please note that this will make it impossible to use some of the
 * in-kernel IEEE 802.11 wireless LAN drivers (eg. orinoco).
 *

!!! ERROR: net-wireless/ieee80211-1.1.13-r1 failed.
Call stack:
  ebuild.sh, line 1555:   Called dyn_setup
  ebuild.sh, line 668:   Called pkg_setup
  ieee80211-1.1.13-r1.ebuild, line 59:   Called die

!!! Incompatible in-kernel ieee80211 subsystem detected
!!! If you need support, post the topmost build error, and the call stack if relevant.

Error in sys.exitfunc: