Mike-Heard
commented
12 months ago The above was one of two paragraphs that I propose to eliminate. This was the second:
--cut here-- Note: per packet options can occur either at the end of the original user data or be placed after the FRAG option of the first segment, with the Reassembled Datagram Option Start (RDOS) in the terminal FRAG option set accordingly. This includes its use in atomic fragments, where the terminal option is the initial and only fragment. --end--
jtouch
gorryfair
I think if the following text is removed from Section 9.4, the rest of the section will make sense. --cut here-- If RDOS is larger than Frag. Start of the first fragment (offset=8), then all the per-packet options occur before the user data as it is reassembled. If RDOS points to the end of the original IP packet, then there are no per-packet options. If RDOS is smaller than Frag. Start of the first fragment, then it indicates the end of the per- fragment options (of the first fragment) and the start of per-packet options (of the reassembled user data). The RDOS field enables the FRAG option to precede other options in every fragment and to enable all packet options to precede user data, enabling easier support for reassembly offload via DMA and to support limited router option processing hardware. --end--