Differential D36649

Ignore IPv6 NAs and drop IPv6 NSs when BACKUP CARP address is used
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Authored by ae on Sep 21 2022, 1:35 PM.

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bz
melifaro
glebius

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rGccd69bd573f1: Ignore IPv6 NA and drop IPv6 NS when BACKUP CARP address is used

Summary

Ignore NAs when they are received for BACKUP CARP address, so ND6 cache will not changed.
Also do not send NS from BACKUP CARP addresses, this won't confuse network switch and it won't complain about MAC addresses flapping.
OpenBSD has similar solution for NAs.

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Repository

rG FreeBSD src repository

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No Test Coverage

Build Status

Buildable 47468
Build 44355: arc lint + arc unit

Event Timeline

ae created this revision.Sep 21 2022, 1:35 PM

ae held this revision as a draft.

Herald added subscribers: glebius, melifaro, imp. · View Herald TranscriptSep 21 2022, 1:35 PM

Harbormaster completed remote builds in B47468: Diff 110788.Sep 21 2022, 1:35 PM

ae published this revision for review.Sep 21 2022, 1:40 PM

ae edited the summary of this revision. (Show Details)

ae added reviewers: bz, melifaro, glebius, network.

zlei added a subscriber: zlei.Sep 22 2022, 4:42 AM

This revision was not accepted when it landed; it landed in state Needs Review.Oct 6 2022, 5:01 PM

Closed by commit rGccd69bd573f1: Ignore IPv6 NA and drop IPv6 NS when BACKUP CARP address is used (authored by ae). · Explain Why

This revision was automatically updated to reflect the committed changes.

ae added a commit: rGccd69bd573f1: Ignore IPv6 NA and drop IPv6 NS when BACKUP CARP address is used.

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sys/

netinet6/

56 lines

Diff 110788

sys/netinet6/nd6_nbr.c

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