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tcp_fack

file: /proc/sys/net/ipv4/tcp_fack
variable: net.ipv4.tcp_fack
Official reference

This is a legacy option, it has no effect anymore.

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Last update: 2026-03-30 12:00:00 UTC
Parsed kernel version 6.18 from git

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Updated by Ilya Vasilyev aka Nadz Goldman from Arviol ( vStack dep. ), ITG