Temporary Fix: Wifi issue on Nexus 7
-Root Explorer/ES explorer etc
this action will remove ppoe setting in your router, you need setup again your router or try Turn Off
your router first.
*use root explorer/ES explorer etc. navigate to /system/etc/dhcpd
*remove all file insde dhcpd folder (contain 2 file + 1folder).
*connect back your nexus 7 to wifi
*if you got obtained ip address, open Terminal Emulator & excute this:
-netcfg wlan0 dhcp
-netcfg lo DOWN
*done. Test your connection..
hope its help...
technically idk why this happen dont ask me, but its issue solved on KOT49H and KVT49L ROM
GOOGLE NEXUS 7 // 4.2.2