These are the packet types that are vulnerable according to the updated Cisco advisory:

IP Protocol 53 -- SWIPE -- a network-layer encrypted encapsulation protocol for IP; pre-dates IPsec and seems not to have been widely implemented

IP Protocol 55 -- IP Mobility -- a minimal encapsulation scheme developed to modify routing for IP datagrams

IP Protocol 77 -- Sun Network Disk boot protocol -- a temporary protocol assignment that predates the invention of the Network File System in 1984.

IP Protocol 103 -- Protocol Independent Multicast (PIM) -- a multicast routing protocol designed to thrive in sparsely populated wide area networks, and the only one of the vulnerable protocols that appears to still be in active use and development.