gso: do not skip outer ip header in case of ipip and net_failover
This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v4.9.304 by commit 45d006c2c7ed7baf1fa258fa7b5bc9923d3a983e, it was introduced in version v3.13 by commit cb32f511a70be8967ac9025cf49c44324ced9a39. For more details please see the references link.