2 NET_IPV4_CONF_FORWARDING
3 NET_IPV4_CONF_MC_FORWARDING
4 NET_IPV4_CONF_PROXY_ARP
5 NET_IPV4_CONF_ACCEPT_REDIRECTS
6 NET_IPV4_CONF_SECURE_REDIRECTS
7 NET_IPV4_CONF_SEND_REDIRECTS
8 NET_IPV4_CONF_SHARED_MEDIA
9 NET_IPV4_CONF_RP_FILTER
10 NET_IPV4_CONF_ACCEPT_SOURCE_ROUTE
11 NET_IPV4_CONF_BOOTP_RELAY
12 NET_IPV4_CONF_LOG_MARTIANS
14 NET_IPV4_CONF_ARPFILTER
15 NET_IPV4_CONF_MEDIUM_ID
17 NET_IPV4_CONF_NOPOLICY
19 NET_IPV4_CONF_FORCE_IGMP_VERSION
20 NET_IPV4_CONF_ARP_ANNOUNCE
21 NET_IPV4_CONF_ARP_IGNORE
22 NET_IPV4_CONF_PROMOTE_SECONDARIES
23 NET_IPV4_CONF_ARP_ACCEPT
24 NET_IPV4_CONF_ARP_NOTIFY