odhcp6c: Send RS on start

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@35137 3c298f89-4303-0410-b956-a3cf2f4a3e73
ath9k: fix memory corruption issues on ar5416/ar91xx

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@35139 3c298f89-4303-0410-b956-a3cf2f4a3e73