Refactor and improve boundary checking on IPv6 extension header handling.
Limit parsing of IPv6 extension headers to a maximum of 4 headers and a
depth of 256 bytes.
Type: fix Signed-off-by: Ole Troan <ot@cisco.com>
Change-Id: Ide40aaa2b482ceef7e92f02fa0caeadb3b8f7556 Signed-off-by: Ole Troan <ot@cisco.com>