ipv6: ensure sane device mtu in tunnels
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 v5.15.77 by commit ad3f1d9bf162c487d23df684852597961b745cae, it was introduced in version v3.7 by commit c12b395a46646bab69089ce7016ac78177f6001f. For more details please see the references link.