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fix(pcapng): the four PCAP-NG parser registrars warn when handed their own entry #1401
Description
Describe the bug
#1400 (#1362) gives every parser-storing registrar an identity guard, so handing back the entry already stored no longer warns about a displacement that did not happen. PCAP-NG's four registrars were left out on purpose, because #1398 owns those files: register_block, register_option, register_record and register_secrets in pcapkit/protocols/misc/pcapng.py.
To Reproduce
Re-register any shipped PCAP-NG entry with its own stored value. It warns, although nothing changed.
Expected behavior
The same incumbent == meth early return that #1400 applies elsewhere: silent on the same entry, a warning on a real displacement.
Activity
JarryShaw commentedon Oct 8, 2026
Unblocked: #1398 (and #1400) have merged. One worker is taking all the PCAP-NG follow-ups together, #1382–#1384, #1401, #1405 and #1406, because they edit the same
pcapng.pyfiles.fix(pcapng)!: PCAP-NG round-trip follow-ups (#1382, #1383, #1384, #1401…