Add oif rules that allow UID 0 to bypass the VPN.

This is needed for wifi calling so that the kernel (which does
not set marks) can tee packets towards the modem. It also fixes
things like not being able to reply to DHCP requests from
tethered clients when a VPN is up.

System apps can already bypass the VPN using explicit marks, so
allowing UID 0 to do so does not create additional bypass VPN

Bug: 19500693
Change-Id: Ie324026893637e9bd8e7aa65a37579569390e7b7
1 file changed
tree: 33b45eabd9dc617f8d3aa0bd3f0aa2f4116d536f
  1. client/
  2. include/
  3. server/