Updating link order for Darwin platform

[woody-apple]

Pairing testing has shown that for one reason or another, occasionally either the ULA update is late, and/or isn't working. The Link Local address however works almost all of the time, and tends to be more stable across device reset.

This brings about a 20% improvement to pairing reliability on Darwin.

[github-actions]

PR #23265: Size comparison from e4f60ce to 3691baa

Increases (2 builds for bl702)

platform	target	config	section	e4f60ce	3691baa	change	% change
bl702	lighting-app	bl702	.debug_info	37908755	37908762	7	0.0
			.debug_line	5257407	5257410	3	0.0
		bl702+rpc	.debug_info	41815370	41815378	8	0.0
			.debug_line	5631938	5631941	3	0.0

Decreases (2 builds for bl702)

platform	target	config	section	e4f60ce	3691baa	change	% change
bl702	lighting-app	bl702	.debug_abbrev	1507059	1507041	-18	-0.0
			.text	957310	957308	-2	-0.0
		bl702+rpc	.debug_abbrev	1644604	1644586	-18	-0.0

Full report (5 builds for bl702, mbed, nrfconnect)

platform	target	config	section	e4f60ce	3691baa	change	% change
bl702	lighting-app	bl702		0	0	0	0.0
			(read only)	3262	3262	0	0.0
			(read/write)	1188947	1188947	0	0.0
			.bleromro	6296	6296	0	0.0
			.bleromrw	124	124	0	0.0
			.boot2	688	688	0	0.0
			.bss	67118	67118	0	0.0
			.bss_psram	29696	29696	0	0.0
			.comment	48	48	0	0.0
			.data	4272	4272	0	0.0
			.debug_abbrev	1507059	1507041	-18	-0.0
			.debug_aranges	133144	133144	0	0.0
			.debug_frame	486648	486648	0	0.0
			.debug_info	37908755	37908762	7	0.0
			.debug_line	5257407	5257410	3	0.0
			.debug_loc	3367638	3367638	0	0.0
			.debug_ranges	359456	359456	0	0.0
			.debug_str	3457927	3457927	0	0.0
			.hbn	509	509	0	0.0
			.hbn_noinit	260	260	0	0.0
			.init	342	342	0	0.0
			.init_array	144	144	0	0.0
			.psram	0	0	0	0.0
			.riscv.attributes	47	47	0	0.0
			.rodata	116744	116744	0	0.0
			.rsvd	3188	3188	0	0.0
			.shstrtab	293	293	0	0.0
			.stack	2048	2048	0	0.0
			.strtab	565127	565127	0	0.0
			.symtab	171680	171680	0	0.0
			.tcm_data	36	36	0	0.0
			.tcmcode	3262	3262	0	0.0
			.text	957310	957308	-2	-0.0
		bl702+rpc		0	0	0	0.0
			(read only)	3262	3262	0	0.0
			(read/write)	1284627	1284627	0	0.0
			.bleromro	6296	6296	0	0.0
			.bleromrw	124	124	0	0.0
			.boot2	688	688	0	0.0
			.bss	75166	75166	0	0.0
			.bss_psram	29936	29936	0	0.0
			.comment	48	48	0	0.0
			.data	4800	4800	0	0.0
			.debug_abbrev	1644604	1644586	-18	-0.0
			.debug_aranges	140648	140648	0	0.0
			.debug_frame	512020	512020	0	0.0
			.debug_info	41815370	41815378	8	0.0
			.debug_line	5631938	5631941	3	0.0
			.debug_loc	3560285	3560285	0	0.0
			.debug_ranges	381912	381912	0	0.0
			.debug_str	3853897	3853897	0	0.0
			.hbn	509	509	0	0.0
			.hbn_noinit	260	260	0	0.0
			.init	342	342	0	0.0
			.init_array	160	160	0	0.0
			.psram	0	0	0	0.0
			.riscv.attributes	47	47	0	0.0
			.rodata	130136	130136	0	0.0
			.rsvd	3188	3188	0	0.0
			.shstrtab	293	293	0	0.0
			.stack	2048	2048	0	0.0
			.strtab	624300	624300	0	0.0
			.symtab	189488	189488	0	0.0
			.tcm_data	36	36	0	0.0
			.tcmcode	3262	3262	0	0.0
			.text	1030756	1030756	0	0.0
mbed	lock-app	CY8CPROTO_062_4343W+release	(read only)	6224	6224	0	0.0
			(read/write)	2452168	2452168	0	0.0
			.bss	215028	215028	0	0.0
			.data	5872	5872	0	0.0
			.text	1414812	1414812	0	0.0
nrfconnect	all-clusters-app	nrf52840dk_nrf52840	(read/write)	1183627	1183627	0	0.0
			bss	144457	144457	0	0.0
			rodata	144396	144396	0	0.0
			text	815888	815888	0	0.0
	all-clusters-minimal-app	nrf52840dk_nrf52840	(read/write)	1162311	1162311	0	0.0
			bss	143684	143684	0	0.0
			rodata	135968	135968	0	0.0
			text	803780	803780	0	0.0

[andy31415]

Should we consider making this a default? Or do we believe this is apple-specific?

I am thinking to have some config of LL_ADDRESS_IS_BEST (with a better name) and enable it for __APPLE__ and make it easy for others to also enable it if it seems correct. Maybe in build flags even.

[woody-apple]

Should we consider making this a default? Or do we believe this is apple-specific?

I am thinking to have some config of LL_ADDRESS_IS_BEST (with a better name) and enable it for __APPLE__ and make it easy for others to also enable it if it seems correct. Maybe in build flags even.

I do think Apple specific is correct for now, as there's some oddities with ULAs right now on this platform.