net/ipv6/Kconfig

   1 #
   2 # IPv6 configuration
   3 #
   4
   5 #   IPv6 as module will cause a CRASH if you try to unload it
   6 menuconfig IPV6
   7         tristate "The IPv6 protocol"
   8         default m
   9         ---help---
  10           This is complemental support for the IP version 6.
  11           You will still be able to do traditional IPv4 networking as well.
  12
  13           For general information about IPv6, see
  14           <https://en.wikipedia.org/wiki/IPv6>.
  15           For Linux IPv6 development information, see <http://www.linux-ipv6.org>.
  16           For specific information about IPv6 under Linux, read the HOWTO at
  17           <http://www.bieringer.de/linux/IPv6/>.
  18
  19           To compile this protocol support as a module, choose M here: the
  20           module will be called ipv6.
  21
  22 if IPV6
  23
  24 config IPV6_ROUTER_PREF
  25         bool "IPv6: Router Preference (RFC 4191) support"
  26         ---help---
  27           Router Preference is an optional extension to the Router
  28           Advertisement message which improves the ability of hosts
  29           to pick an appropriate router, especially when the hosts
  30           are placed in a multi-homed network.
  31
  32           If unsure, say N.
  33
  34 config IPV6_ROUTE_INFO
  35         bool "IPv6: Route Information (RFC 4191) support"
  36         depends on IPV6_ROUTER_PREF
  37         ---help---
  38           This is experimental support of Route Information.
  39
  40           If unsure, say N.
  41
  42 config IPV6_OPTIMISTIC_DAD
  43         bool "IPv6: Enable RFC 4429 Optimistic DAD"
  44         ---help---
  45           This is experimental support for optimistic Duplicate
  46           Address Detection.  It allows for autoconfigured addresses
  47           to be used more quickly.
  48
  49           If unsure, say N.
  50
  51 config INET6_AH
  52         tristate "IPv6: AH transformation"
  53         select XFRM_ALGO
  54         select CRYPTO
  55         select CRYPTO_HMAC
  56         select CRYPTO_MD5
  57         select CRYPTO_SHA1
  58         ---help---
  59           Support for IPsec AH.
  60
  61           If unsure, say Y.
  62
  63 config INET6_ESP
  64         tristate "IPv6: ESP transformation"
  65         select XFRM_ALGO
  66         select CRYPTO
  67         select CRYPTO_AUTHENC
  68         select CRYPTO_HMAC
  69         select CRYPTO_MD5
  70         select CRYPTO_CBC
  71         select CRYPTO_SHA1
  72         select CRYPTO_DES
  73         ---help---
  74           Support for IPsec ESP.
  75
  76           If unsure, say Y.
  77
  78 config INET6_IPCOMP
  79         tristate "IPv6: IPComp transformation"
  80         select INET6_XFRM_TUNNEL
  81         select XFRM_IPCOMP
  82         ---help---
  83           Support for IP Payload Compression Protocol (IPComp) (RFC3173),
  84           typically needed for IPsec.
  85
  86           If unsure, say Y.
  87
  88 config IPV6_MIP6
  89         tristate "IPv6: Mobility"
  90         select XFRM
  91         ---help---
  92           Support for IPv6 Mobility described in RFC 3775.
  93
  94           If unsure, say N.
  95
  96 config INET6_XFRM_TUNNEL
  97         tristate
  98         select INET6_TUNNEL
  99         default n
 100
 101 config INET6_TUNNEL
 102         tristate
 103         default n
 104
 105 config INET6_XFRM_MODE_TRANSPORT
 106         tristate "IPv6: IPsec transport mode"
 107         default IPV6
 108         select XFRM
 109         ---help---
 110           Support for IPsec transport mode.
 111
 112           If unsure, say Y.
 113
 114 config INET6_XFRM_MODE_TUNNEL
 115         tristate "IPv6: IPsec tunnel mode"
 116         default IPV6
 117         select XFRM
 118         ---help---
 119           Support for IPsec tunnel mode.
 120
 121           If unsure, say Y.
 122
 123 config INET6_XFRM_MODE_BEET
 124         tristate "IPv6: IPsec BEET mode"
 125         default IPV6
 126         select XFRM
 127         ---help---
 128           Support for IPsec BEET mode.
 129
 130           If unsure, say Y.
 131
 132 config INET6_XFRM_MODE_ROUTEOPTIMIZATION
 133         tristate "IPv6: MIPv6 route optimization mode"
 134         select XFRM
 135         ---help---
 136           Support for MIPv6 route optimization mode.
 137
 138 config IPV6_VTI
 139 tristate "Virtual (secure) IPv6: tunneling"
 140         select IPV6_TUNNEL
 141         select NET_IP_TUNNEL
 142         depends on INET6_XFRM_MODE_TUNNEL
 143         ---help---
 144         Tunneling means encapsulating data of one protocol type within
 145         another protocol and sending it over a channel that understands the
 146         encapsulating protocol. This can be used with xfrm mode tunnel to give
 147         the notion of a secure tunnel for IPSEC and then use routing protocol
 148         on top.
 149
 150 config IPV6_SIT
 151         tristate "IPv6: IPv6-in-IPv4 tunnel (SIT driver)"
 152         select INET_TUNNEL
 153         select NET_IP_TUNNEL
 154         select IPV6_NDISC_NODETYPE
 155         default y
 156         ---help---
 157           Tunneling means encapsulating data of one protocol type within
 158           another protocol and sending it over a channel that understands the
 159           encapsulating protocol. This driver implements encapsulation of IPv6
 160           into IPv4 packets. This is useful if you want to connect two IPv6
 161           networks over an IPv4-only path.
 162
 163           Saying M here will produce a module called sit. If unsure, say Y.
 164
 165 config IPV6_SIT_6RD
 166         bool "IPv6: IPv6 Rapid Deployment (6RD)"
 167         depends on IPV6_SIT
 168         default n
 169         ---help---
 170           IPv6 Rapid Deployment (6rd; draft-ietf-softwire-ipv6-6rd) builds upon
 171           mechanisms of 6to4 (RFC3056) to enable a service provider to rapidly
 172           deploy IPv6 unicast service to IPv4 sites to which it provides
 173           customer premise equipment.  Like 6to4, it utilizes stateless IPv6 in
 174           IPv4 encapsulation in order to transit IPv4-only network
 175           infrastructure.  Unlike 6to4, a 6rd service provider uses an IPv6
 176           prefix of its own in place of the fixed 6to4 prefix.
 177
 178           With this option enabled, the SIT driver offers 6rd functionality by
 179           providing additional ioctl API to configure the IPv6 Prefix for in
 180           stead of static 2002::/16 for 6to4.
 181
 182           If unsure, say N.
 183
 184 config IPV6_NDISC_NODETYPE
 185         bool
 186
 187 config IPV6_TUNNEL
 188         tristate "IPv6: IP-in-IPv6 tunnel (RFC2473)"
 189         select INET6_TUNNEL
 190         ---help---
 191           Support for IPv6-in-IPv6 and IPv4-in-IPv6 tunnels described in
 192           RFC 2473.
 193
 194           If unsure, say N.
 195
 196 config IPV6_GRE
 197         tristate "IPv6: GRE tunnel"
 198         select IPV6_TUNNEL
 199         select NET_IP_TUNNEL
 200         ---help---
 201           Tunneling means encapsulating data of one protocol type within
 202           another protocol and sending it over a channel that understands the
 203           encapsulating protocol. This particular tunneling driver implements
 204           GRE (Generic Routing Encapsulation) and at this time allows
 205           encapsulating of IPv4 or IPv6 over existing IPv6 infrastructure.
 206           This driver is useful if the other endpoint is a Cisco router: Cisco
 207           likes GRE much better than the other Linux tunneling driver ("IP
 208           tunneling" above). In addition, GRE allows multicast redistribution
 209           through the tunnel.
 210
 211           Saying M here will produce a module called ip6_gre. If unsure, say N.
 212
 213 config IPV6_MULTIPLE_TABLES
 214         bool "IPv6: Multiple Routing Tables"
 215         select FIB_RULES
 216         ---help---
 217           Support multiple routing tables.
 218
 219 config IPV6_SUBTREES
 220         bool "IPv6: source address based routing"
 221         depends on IPV6_MULTIPLE_TABLES
 222         ---help---
 223           Enable routing by source address or prefix.
 224
 225           The destination address is still the primary routing key, so mixing
 226           normal and source prefix specific routes in the same routing table
 227           may sometimes lead to unintended routing behavior.  This can be
 228           avoided by defining different routing tables for the normal and
 229           source prefix specific routes.
 230
 231           If unsure, say N.
 232
 233 config IPV6_MROUTE
 234         bool "IPv6: multicast routing"
 235         depends on IPV6
 236         ---help---
 237           Experimental support for IPv6 multicast forwarding.
 238           If unsure, say N.
 239
 240 config IPV6_MROUTE_MULTIPLE_TABLES
 241         bool "IPv6: multicast policy routing"
 242         depends on IPV6_MROUTE
 243         select FIB_RULES
 244         help
 245           Normally, a multicast router runs a userspace daemon and decides
 246           what to do with a multicast packet based on the source and
 247           destination addresses. If you say Y here, the multicast router
 248           will also be able to take interfaces and packet marks into
 249           account and run multiple instances of userspace daemons
 250           simultaneously, each one handling a single table.
 251
 252           If unsure, say N.
 253
 254 config IPV6_PIMSM_V2
 255         bool "IPv6: PIM-SM version 2 support"
 256         depends on IPV6_MROUTE
 257         ---help---
 258           Support for IPv6 PIM multicast routing protocol PIM-SMv2.
 259           If unsure, say N.
 260
 261 endif # IPV6