[JarryShaw]

• Searched for similar pull requests
• Followed the coding style
• make test passes, and a test case covers the change
• Changelog entry: N/A — centralised in docs(changelog): shared 1.5.0 changelog — long-lived, merges last (#610, #616, #617, #618, #620) #657

What is the purpose of your pull request?

• docs — documentation only

---

Description

Part of #1103, ruling 1: test narratives say what the code does, not what a change did. This PR covers tests/protocols/internet/ and tests/protocols/link/.

• Rewrites:
  • "now" and "no longer" become the present tense.
  • "used to", "before this fix" and "on the pristine tree" become the defect the test guards against.
  • "the old rule", "pre-HIP parameter padding aligns the contents, not the record, so every parameter pcapkit emits is 4 (mod 8) octets #651" and "Before #NNN" are named by the defect, and keep the issue number.
  • Review-round and fixture-renumbering histories are cut.
  • Counts inside rewritten sentences are dropped.
• Kept:
  • "Measured on <sha>" evidence.
  • "used to" where it means "used for".
  • Runtime "now" and "unpatched".
  • Change-relative method names, subTest labels and assertion messages, which are code.
• Scope: comments and docstrings only. With docstrings stripped, every changed file has the same AST as main.
• Tests run: every changed file passes in sequential batches. The tier guard, the docstring contract and the tests/project scanners also pass (207).
• Overlap: fix(tcp): keep Quick-Start rate an int and a Fast Open cookie request bytes (#2167) #2185 and fix(hip): build the ECHO_RESPONSE_UNSIGNED schema in its maker (#2170) #2188 share one file each, and both merge cleanly.

[JarryShaw]

Review: GOOD TO GO at 10a46b36f (Sonnet). About 80 hunks were read against the code, and no change in meaning turned up. Present-tense claims match the code, including IPv6_Ext.next, the ESP bases and HIP 128/129. The 26-octet #1118 figure was re-measured before the fix. The AST check passes on all 42 files, and every changed file passes its tests. Counts and narrative already in these files that this PR leaves alone are logged for the next #1103 round.

[JarryShaw]

Ready to merge at 10a46b36f. Part of #1103 (ruling 1).

• Review: Sonnet GOOD TO GO.
• CI: Required checks passed SUCCESS, 0 failed. Only the board's Sync Status is still open.
• KTLO: 12 legs, no warnings.
• Ordering: protocols/internet leg merged into main, 729 tests, 0 failures.
• Conflicts: merges cleanly with the current main.

[github-actions]

Coverage: 91.55% (unit tier, Python 3.15, 10a46b36f, Unit Tests run success)

Package	Statements	Missed	Branches	Partial	Cover
pcapkit (top level)	104	4	20	2	95.16%
pcapkit/const	19599	880	2618	866	92.12%
pcapkit/corekit	2589	75	816	37	96.48%
pcapkit/dumpkit	282	3	102	3	98.44%
pcapkit/foundation	2971	23	1036	25	98.80%
pcapkit/interface	138	4	52	3	96.32%
pcapkit/protocols	17418	219	4574	185	98.14%
pcapkit/toolkit	869	36	298	10	95.20%
pcapkit/utilities	504	7	146	5	98.15%
pcapkit/vendor	4432	1988	1018	167	51.87%

Per-file detail: the coverage-html artifact of this run.