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# IP netfilter configuration
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menu "IP: Netfilter Configuration"
depends on INET && NETFILTER
config NF_CONNTRACK_IPV4
tristate "IPv4 connection tracking support (required for NAT)"
depends on NF_CONNTRACK
default m if NETFILTER_ADVANCED=n
---help---
Connection tracking keeps a record of what packets have passed
through your machine, in order to figure out how they are related
into connections.
This is IPv4 support on Layer 3 independent connection tracking.