root/net/ipv4/Config.in

/* */

#
# IP configuration
#
bool 'IP: forwarding/gatewaying' CONFIG_IP_FORWARD
bool 'IP: multicasting' CONFIG_IP_MULTICAST
if [ "$CONFIG_FIREWALL" = "y" ]; then
  bool 'IP: firewalling' CONFIG_IP_FIREWALL
fi
bool 'IP: accounting' CONFIG_IP_ACCT
if [ "$CONFIG_IP_FORWARD" = "y" ]; then
  tristate 'IP: tunneling' CONFIG_NET_IPIP
  if [ "$CONFIG_IP_FIREWALL" = "y" ]; then
    bool 'IP: firewall packet logging' CONFIG_IP_FIREWALL_VERBOSE
    bool 'IP: masquerading (ALPHA)' CONFIG_IP_MASQUERADE
  fi
  if [ "$CONFIG_IP_MULTICAST" = "y" ]; then
    bool 'IP: multicast routing(in progress)' CONFIG_IP_MROUTE
  fi
fi
comment '(it is safe to leave these untouched)'
bool 'IP: PC/TCP compatibility mode' CONFIG_INET_PCTCP
tristate 'IP: Reverse ARP' CONFIG_INET_RARP
bool 'IP: Disable Path MTU Discovery (normally enabled)' CONFIG_NO_PATH_MTU_DISCOVERY
bool 'IP: Disable NAGLE algorithm (normally enabled)' CONFIG_TCP_NAGLE_OFF
bool 'IP: Drop source routed frames' CONFIG_IP_NOSR
bool 'IP: Allow large windows (not recommended if <16Mb of memory)' CONFIG_SKB_LARGE

/* */