rfc9035v3.txt		rfc9035.txt
	skipping to change at line 169 ¶		skipping to change at line 169 ¶
	BCP 14 [RFC2119] [RFC8174] when, and only when, they appear in all		BCP 14 [RFC2119] [RFC8174] when, and only when, they appear in all
	capitals, as shown here.		capitals, as shown here.
	3. Extending RFC 6550		3. Extending RFC 6550
	The DODAG Configuration option is defined in Section 6.7.6 of		The DODAG Configuration option is defined in Section 6.7.6 of
	[RFC6550]. Its purpose is extended to distribute configuration		[RFC6550]. Its purpose is extended to distribute configuration
	information affecting the construction and maintenance of the DODAG,		information affecting the construction and maintenance of the DODAG,
	as well as operational parameters for RPL on the DODAG, through the		as well as operational parameters for RPL on the DODAG, through the
	DODAG. The DODAG Configuration option was originally designed with		DODAG. The DODAG Configuration option was originally designed with
	four bit positions reserved for future use as Flags.		four bit positions reserved for future use as flags.
	0 1 2 3		0 1 2 3
	0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1		0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
	+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+		+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
	| Type = 0x04 |Opt Length = 14| | |T| |A| ... |		| Type = 0x04 |Opt Length = 14| | |T| |A| ... |
	+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +		+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +
	<- Flags ->		<- flags ->
	Figure 1: DODAG Configuration Option (Partial View)		Figure 1: DODAG Configuration Option (Partial View)
	This specification defines a new flag, "Enable RFC8138 Compression"		This specification defines a new flag, "Enable Compression per RFC
	(T). The 'T' flag is set to turn on the use of [RFC8138] within the		8138 (T)". The 'T' flag is set to turn on the use of [RFC8138]
	DODAG. The 'T' flag is encoded in position 2 of the reserved Flags		within the DODAG. The 'T' flag is encoded in position 2 of the
	in the DODAG Configuration option (counting from bit 0 as the most		reserved flags in the DODAG Configuration option (counting from bit 0
	significant bit) and set to 0 in legacy implementations as specified		as the most significant bit) and set to 0 in legacy implementations
	in Sections 20.14 and 6.7.6 of [RFC6550], respectively.		as specified in Sections 20.14 and 6.7.6 of [RFC6550], respectively.
	Section 4.1.2 of [RFC9008] updates [RFC6550] to indicate that the		Section 4.1.2 of [RFC9008] updates [RFC6550] to indicate that the
	definition of the Flags applies to Mode of Operation (MOP) values		definition of the flags applies to Mode of Operation (MOP) values
	zero (0) to six (6) only. For a MOP value of 7, [RFC8138] MUST be		zero (0) to six (6) only. For a MOP value of 7, [RFC8138] MUST be
	used on links where 6LoWPAN Header Compression [RFC6282] applies and		used on links where 6LoWPAN Header Compression [RFC6282] applies and
	MUST NOT be used otherwise.		MUST NOT be used otherwise.
	The RPL DODAG Configuration option is typically placed in a DIO		The RPL DODAG Configuration option is typically placed in a DIO
	message. The DIO message propagates down the DODAG to form and then		message. The DIO message propagates down the DODAG to form and then
	maintain its structure. The DODAG Configuration option is copied		maintain its structure. The DODAG Configuration option is copied
	unmodified from parents to children. [RFC6550] states that "Nodes		unmodified from parents to children. [RFC6550] states that "Nodes
	other than the DODAG root MUST NOT modify this information when		other than the DODAG root MUST NOT modify this information when
	propagating the DODAG Configuration option." Therefore, a legacy		propagating the DODAG Configuration option." Therefore, a legacy
End of changes. 4 change blocks.
	9 lines changed or deleted		9 lines changed or added
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