ppp: use more reliable way to set script environment

Signed-off-by: Steven Barth <steven@midlink.org>

SVN-Revision: 46942

package/network/utils/comgt/Makefile

@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=comgt
 PKG_VERSION:=0.32
-PKG_RELEASE:=26
+PKG_RELEASE:=27
 
 PKG_SOURCE:=$(PKG_NAME).$(PKG_VERSION).tgz
 PKG_SOURCE_URL:=@SF/comgt

package/network/utils/comgt/files/3g.sh

@@ -89,9 +89,6 @@ proto_3g_setup() {
 		;;
 	esac
 
-	# Enable RFC 7278
-	proto_export "EXTENDPREFIX=1"
-
 	connect="${apn:+USE_APN=$apn }DIALNUMBER=$dialnumber /usr/sbin/chat -t5 -v -E -f $chat"
 	ppp_generic_setup "$interface" \
 		noaccomp \
@@ -99,6 +96,7 @@ proto_3g_setup() {
 		novj \
 		nobsdcomp \
 		noauth \
+		set EXTENDPREFIX=1 \
 		lock \
 		crtscts \
 		115200 "$device"