Bug 256579 - arp(8) -S doesn't honour "blackhole" keyword
Summary: arp(8) -S doesn't honour "blackhole" keyword
Status: In Progress
Alias: None
Product: Base System
Classification: Unclassified
Component: bin (show other bugs)
Version: 13.0-STABLE
Hardware: Any Any
: --- Affects Many People
Assignee: Alexander V. Chernikov
URL: https://reviews.freebsd.org/D32240
Keywords: needs-qa, regression
Depends on:
Blocks:
 
Reported: 2021-06-13 15:29 UTC by Marek Zarychta
Modified: 2023-06-29 04:45 UTC (History)
3 users (show)

See Also:
koobs: mfc-stable13?
koobs: mfc-stable12?
koobs: mfc-stable11-

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Description Marek Zarychta 2021-06-13 15:29:22 UTC 
arp(8) is still supposed to honour the "blackhole" and "reject" keywords with the -S option but it doesn't work as described in arp(8). I have tested and both: 13.0-STABLE and 11.4-STABLE seem to be affected. If this keyword is deprecated then arp(8) manpage should be updated to reflect this change, otherwise, it looks broken.
Comment 1 Alexander V. Chernikov freebsd_committer freebsd_triage 2021-09-30 22:03:28 UTC 
Raised https://reviews.freebsd.org/D32240 to support the functionality on the kernel side.
Comment 2 Marek Zarychta 2023-06-27 05:38:08 UTC 
(In reply to Alexander V. Chernikov from comment #1)
The patch worked for the packets of local origin, forwarded packets weren't blackholed if I recall.