Weaken language re (N-1) counter initialization approach

[LiosK]

Change Proposal Template

Source (Select one.)

• IETF Published Draft
• Work in Progress Draft

Change Reason (Select all that apply.)

• Typos and grammatical issues
• Bad Reference
• IETF Verbiage modification (MAY, MUST, SHOULD, SHOULD NOT, etc)
• New Text for additional context
• Underlying XML Format Update
• ASCII diagram updates (artwork, code samples, etc.)

Draft Number, Full Section, Name

6.2. Monotonicity and Counters - Counter Rollover Guards:

Current Text:

The technique from Fixed-Length Dedicated Counter Seeding which describes allocating a segment of the fixed-length counter as a rollover guard is also recommended and SHOULD be employed to help mitigate counter rollover issues. (snip)

Proposed Text:

The technique from Fixed-Length Dedicated Counter Seeding which describes allocating a segment of the fixed-length counter as a rollover guard is also helpful to mitigate counter rollover issues. (snip)

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Other Supporting information below:

To align with the MAY wording used in the Fixed-Length Dedicated Counter Seeding: paragraph.

Implementations utilizing fixed-length counter method MAY also choose to randomly initialize a portion counter rather than the entire counter.

Further discussion: #60 (comment)

See also https://github.com/LiosK/infinite-uuid7-rs if you are interested in how often a counter rollover could occur. With a 42-bit counter, it almost never happens.