object header
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... 4 octets
for a single ICMP Object header. All of these octets would be
required if extensions were present.
...
... Each extension object contains one or more 32-bit words, representing
an object header and payload. All object headers share a common
...
... an object header and payload. All object headers share a common
format. Figure 7 depicts the object header and payload ...
... payload. All object headers share a common
format. Figure 7 depicts the object header and payload.
...
... +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Figure 7: Object Header and Payload
...
... 16 bits
Length of the object, measured in octets, including the object
header and object payload.
...