1NET_IPV4_CONF_FORWARDING
2NET_IPV4_CONF_MC_FORWARDING
3NET_IPV4_CONF_PROXY_ARP
4NET_IPV4_CONF_ACCEPT_REDIRECTS
5NET_IPV4_CONF_SECURE_REDIRECTS
6NET_IPV4_CONF_SEND_REDIRECTS
7NET_IPV4_CONF_SHARED_MEDIA
8NET_IPV4_CONF_RP_FILTER
9NET_IPV4_CONF_ACCEPT_SOURCE_ROUTE
10NET_IPV4_CONF_BOOTP_RELAY
11NET_IPV4_CONF_LOG_MARTIANS
12NET_IPV4_CONF_TAG
13NET_IPV4_CONF_ARPFILTER
14NET_IPV4_CONF_MEDIUM_ID
15NET_IPV4_CONF_NOXFRM
16NET_IPV4_CONF_NOPOLICY
17NET_IPV4_CONF_FORCE_IGMP_VERSION
18NET_IPV4_CONF_ARP_ANNOUNCE
19NET_IPV4_CONF_ARP_IGNORE
20NET_IPV4_CONF_PROMOTE_SECONDARIES
21NET_IPV4_CONF_ARP_ACCEPT
22NET_IPV4_CONF_ARP_NOTIFY
23