* master-next:
Add XFRM to IFLA_INFO_KIND and reverse change to iproute2 class.
This patch fixes the XFRM addon for ifupdown2 version 2. The nlpacket for XFRM had a bug, I also changed iproute2 to add the XFRM interface to the local cache after creation. Since XFRM has no IFLA_LINKINFO I made the argument optional. Otherwise no further operation will be done like adding an IP.