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docs: net: document neigh gc_interval sysctl

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Add entry for the neigh/default/gc_interval sysctl. This sysctl is
unused since kernel v2.6.8.

Suggested-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Gabriel Goller <g.goller@proxmox.com>
Link: https://patch.msgid.link/20260225095822.44050-1-g.goller@proxmox.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Gabriel Goller
2026-02-25 10:58:10 +01:00
committed by Jakub Kicinski
parent 5c894879f1
commit d68d21ea6b
1 changed files with 7 additions and 0 deletions
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7
Documentation/networking/ip-sysctl.rst
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@@ -202,6 +202,13 @@ neigh/default/gc_thresh3 - INTEGER
Default: 1024
neigh/default/gc_interval - INTEGER
Specifies how often the garbage collector for neighbor entries
should run. This value applies to the entire table, not
individual entries. Unused since kernel v2.6.8.
Default: 30 seconds
neigh/default/gc_stale_time - INTEGER
Determines how long a neighbor entry can remain unused before it is
considered stale and eligible for garbage collection. Entries that have