--- sane-backends-1.0.23.ebuild	2013-02-07 01:31:18.000000000 +0400
+++ sane-backends-1.0.23-r1.ebuild	2013-02-21 16:10:47.000000000 +0400
@@ -94,7 +94,7 @@
 	umax_pp
 	xerox_mfp"
 
-IUSE="avahi doc gphoto2 ipv6 threads usb v4l xinetd"
+IUSE="avahi doc gphoto2 ipv6 threads usb v4l xinetd snmp"
 
 for backend in ${IUSE_SANE_BACKENDS}; do
 	if [ ${backend} = pnm ]; then
@@ -109,6 +109,7 @@
 REQUIRED_USE="
 	sane_backends_mustek_usb2? ( threads )
 	sane_backends_kvs40xx? ( threads )
+	snmp? ( net-analyzer/net-snmp )
 "
 
 DESCRIPTION="Scanner Access Now Easy - Backends"
@@ -190,7 +191,7 @@
 		fi
 	done
 
-	local myconf=$(use_enable usb libusb)
+	local myconf="$(use_enable usb libusb) $(use_with snmp)"
 	# you can only enable this backend, not disable it...
 	if use sane_backends_pnm; then
 		myconf="${myconf} --enable-pnm-backend"