ip-netconf

displays network configuration parameters for interfaces

TLDR

Show all network configuration

$ ip netconf

Show config for specific interface

$ ip netconf show dev eth0

Show only IPv4 configuration

$ ip -4 netconf

Show only IPv6 configuration

$ ip -6 netconf

SYNOPSIS

ip [OPTIONS] netconf { show [ dev NAME ] | help }

ip netconf monitors and displays IPv4 and IPv6 network configuration parameters from /proc/sys/net/ipv[4|6]/conf/. It shows settings like forwarding status, RPF (Reverse Path Filtering) mode, MC forwarding, and proxy ARP/NDP status. If no interface is specified, the all entry is displayed.

PARAMETERS

show

Show network configuration (default if omitted)

dev NAME

Show configuration for specific interface

help

Display help information

OUTPUT FIELDS

forwarding

Whether IP forwarding is enabled

rp_filter

Reverse Path Filtering mode (0=off, 1=strict, 2=loose)

mc_forwarding

Whether multicast forwarding is enabled

proxy_neigh

Whether proxy neighbor (ARP/NDP) is enabled

ignore_routes_with_linkdown

Ignore routes when link is down

CAVEATS

Use -4 or -6 to filter by address family. Configuration can only be changed through sysctl or interface-specific tools, not through ip netconf directly.