ospf6d: fix argument processing in the "area ... range" command

[rwestphal]

• When the "cost" argument isn't present, the default cost should be
  used instead of preserving the previously configured one (if any);
• When the "not-advertise" argument isn't present, the "not-advertise"
  flag should be unset regardless if it was previously configured or
  not.

Configuration commands should be deterministic and work in the same
way regardless of the current state.

Signed-off-by: Renato Westphal [email protected]

[LabN-CI]

Outdated results 💚

Basic BGPD CI results: SUCCESS, 0 tests failed

_	_
Result	SUCCESS git merge/9108 848db95
Date	07/21/2021
Start	14:31:59
Finish	14:57:38
Run-Time	25:39
Total	1813
Pass	1813
Fail	0
Valgrind-Errors
Valgrind-Loss
Details	vncregress-2021-07-21-14:31:59.txt
Log	autoscript-2021-07-21-14:33:12.log.bz2
Memory	490 470 431

For details, please contact louberger

[NetDEF-CI]

Continuous Integration Result: SUCCESSFUL

Continuous Integration Result: SUCCESSFUL

Congratulations, this patch passed basic tests

Tested-by: NetDEF / OpenSourceRouting.org CI System

CI System Testrun URL: https://ci1.netdef.org/browse/FRR-FRRPULLREQ-20417/

This is a comment from an automated CI system.
For questions and feedback in regards to this CI system, please feel free to email
Martin Winter - mwinter (at) opensourcerouting.org.

[LabN-CI]

💚 Basic BGPD CI results: SUCCESS, 0 tests failed

Results table

_	_
Result	SUCCESS git merge/9108 b9ff9be
Date	07/21/2021
Start	22:30:52
Finish	22:56:23
Run-Time	25:31
Total	1813
Pass	1813
Fail	0
Valgrind-Errors
Valgrind-Loss
Details	vncregress-2021-07-21-22:30:52.txt
Log	autoscript-2021-07-21-22:32:11.log.bz2
Memory	495 514 429

For details, please contact louberger

[NetDEF-CI]

Continuous Integration Result: SUCCESSFUL

Congratulations, this patch passed basic tests

Tested-by: NetDEF / OpenSourceRouting.org CI System

CI System Testrun URL: https://ci1.netdef.org/browse/FRR-FRRPULLREQ-20420/

This is a comment from an automated CI system.
For questions and feedback in regards to this CI system, please feel free to email
Martin Winter - mwinter (at) opensourcerouting.org.

[idryzhov]

@Mergifyio backport stable/8.0

[mergify]

Command backport stable/8.0: success

Backports have been created

• #9296 ospf6d: fix argument processing in the "area ... range" command (backport #9108) has been created for branch stable/8.0