[Stopkaa]

Backport of #23008

Contribution description

This PR reduce the amout of DUP's to the state of 2025.07-branch in the nrf-radio driver but doesn't get rid of them entirely.

Testing procedure

master
nrf -> samr21

2026-10-28 09:47:15,226 # 
2026-10-28 09:47:15,230 # --- fe80::204:2519:1801:bd0e PING statistics ---
2026-10-28 09:47:15,237 # 1000 packets transmitted, 990 packets received, 162 duplicates, 1% packet loss
2026-10-28 09:47:15,241 # round-trip min/avg/max = 6.265/10.862/46.973 ms

samr21 -> nrf

2026-10-28 09:48:09,012 # 
2026-10-28 09:48:09,016 # --- fe80::5cef:e8ca:a044:9fb9 PING statistics ---
2026-10-28 09:48:09,023 # 1000 packets transmitted, 974 packets received, 7 duplicates, 2% packet loss
2026-10-28 09:48:09,028 # round-trip min/avg/max = 6.577/11.716/62.965 ms

pr
nrf -> samr21

2026-10-28 09:50:56,489 # 
2026-10-28 09:50:56,493 # --- fe80::204:2519:1801:bd0e PING statistics ---
2026-10-28 09:50:56,500 # 1000 packets transmitted, 997 packets received, 3 duplicates, 0% packet loss
2026-10-28 09:50:56,504 # round-trip min/avg/max = 6.473/9.276/31.250 ms

samr21 -> nrf

2026-10-28 09:51:34,191 # 
2026-10-28 09:51:34,195 # --- fe80::5cef:e8ca:a044:9fb9 PING statistics ---
2026-10-28 09:51:34,202 # 1000 packets transmitted, 1000 packets received, 4 duplicates, 0% packet loss
2026-10-28 09:51:34,206 # round-trip min/avg/max = 6.425/9.123/20.617 ms

Issues/PRs references

fixes #23005

Declaration of AI-Tools / LLMs usage:

AI-Tools / LLMs that were used are:

• none

[riot-ci]

Murdock results

✔️ PASSED

c6ea61d net/ieee802154/submac: deactivate cca send before an ack transmission

Success	Failures	Total	Runtime
14013	0	14013	11m:08s

Artifacts

• Documentation preview