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 y
   9         ---help---
  10           Support for IP version 6 (IPv6).
  11
  12           For general information about IPv6, see
  13           <https://en.wikipedia.org/wiki/IPv6>.
  14           For specific information about IPv6 under Linux, see
  15           Documentation/networking/ipv6.txt and read the HOWTO at
  16           <http://www.tldp.org/HOWTO/Linux+IPv6-HOWTO/>
  17
  18           To compile this protocol support as a module, choose M here: the
  19           module will be called ipv6.
  20
  21 if IPV6
  22
  23 config IPV6_ROUTER_PREF
  24         bool "IPv6: Router Preference (RFC 4191) support"
  25         ---help---
  26           Router Preference is an optional extension to the Router
  27           Advertisement message which improves the ability of hosts
  28           to pick an appropriate router, especially when the hosts
  29           are placed in a multi-homed network.
  30
  31           If unsure, say N.
  32
  33 config IPV6_ROUTE_INFO
  34         bool "IPv6: Route Information (RFC 4191) support"
  35         depends on IPV6_ROUTER_PREF
  36         ---help---
  37           This is experimental support of Route Information.
  38
  39           If unsure, say N.
  40
  41 config IPV6_OPTIMISTIC_DAD
  42         bool "IPv6: Enable RFC 4429 Optimistic DAD"
  43         ---help---
  44           This is experimental support for optimistic Duplicate
  45           Address Detection.  It allows for autoconfigured addresses
  46           to be used more quickly.
  47
  48           If unsure, say N.
  49
  50 config INET6_AH
  51         tristate "IPv6: AH transformation"
  52         select XFRM_ALGO
  53         select CRYPTO
  54         select CRYPTO_HMAC
  55         select CRYPTO_MD5
  56         select CRYPTO_SHA1
  57         ---help---
  58           Support for IPsec AH.
  59
  60           If unsure, say Y.
  61
  62 config INET6_ESP
  63         tristate "IPv6: ESP transformation"
  64         select XFRM_ALGO
  65         select CRYPTO
  66         select CRYPTO_AUTHENC
  67         select CRYPTO_HMAC
  68         select CRYPTO_MD5
  69         select CRYPTO_CBC
  70         select CRYPTO_SHA1
  71         select CRYPTO_DES
  72         ---help---
  73           Support for IPsec ESP.
  74
  75           If unsure, say Y.
  76
  77 config INET6_IPCOMP
  78         tristate "IPv6: IPComp transformation"
  79         select INET6_XFRM_TUNNEL
  80         select XFRM_IPCOMP
  81         ---help---
  82           Support for IP Payload Compression Protocol (IPComp) (RFC3173),
  83           typically needed for IPsec.
  84
  85           If unsure, say Y.
  86
  87 config IPV6_MIP6
  88         tristate "IPv6: Mobility"
  89         select XFRM
  90         ---help---
  91           Support for IPv6 Mobility described in RFC 3775.
  92
  93           If unsure, say N.
  94
  95 config IPV6_ILA
  96         tristate "IPv6: Identifier Locator Addressing (ILA)"
  97         depends on NETFILTER
  98         select LWTUNNEL
  99         ---help---
 100           Support for IPv6 Identifier Locator Addressing (ILA).
 101
 102           ILA is a mechanism to do network virtualization without
 103           encapsulation. The basic concept of ILA is that we split an
 104           IPv6 address into a 64 bit locator and 64 bit identifier. The
 105           identifier is the identity of an entity in communication
 106           ("who") and the locator expresses the location of the
 107           entity ("where").
 108
 109           ILA can be configured using the "encap ila" option with
 110           "ip -6 route" command. ILA is described in
 111           https://tools.ietf.org/html/draft-herbert-nvo3-ila-00.
 112
 113           If unsure, say N.
 114
 115 config INET6_XFRM_TUNNEL
 116         tristate
 117         select INET6_TUNNEL
 118         default n
 119
 120 config INET6_TUNNEL
 121         tristate
 122         default n
 123
 124 config INET6_XFRM_MODE_TRANSPORT
 125         tristate "IPv6: IPsec transport mode"
 126         default IPV6
 127         select XFRM
 128         ---help---
 129           Support for IPsec transport mode.
 130
 131           If unsure, say Y.
 132
 133 config INET6_XFRM_MODE_TUNNEL
 134         tristate "IPv6: IPsec tunnel mode"
 135         default IPV6
 136         select XFRM
 137         ---help---
 138           Support for IPsec tunnel mode.
 139
 140           If unsure, say Y.
 141
 142 config INET6_XFRM_MODE_BEET
 143         tristate "IPv6: IPsec BEET mode"
 144         default IPV6
 145         select XFRM
 146         ---help---
 147           Support for IPsec BEET mode.
 148
 149           If unsure, say Y.
 150
 151 config INET6_XFRM_MODE_ROUTEOPTIMIZATION
 152         tristate "IPv6: MIPv6 route optimization mode"
 153         select XFRM
 154         ---help---
 155           Support for MIPv6 route optimization mode.
 156
 157 config IPV6_VTI
 158 tristate "Virtual (secure) IPv6: tunneling"
 159         select IPV6_TUNNEL
 160         select NET_IP_TUNNEL
 161         depends on INET6_XFRM_MODE_TUNNEL
 162         ---help---
 163         Tunneling means encapsulating data of one protocol type within
 164         another protocol and sending it over a channel that understands the
 165         encapsulating protocol. This can be used with xfrm mode tunnel to give
 166         the notion of a secure tunnel for IPSEC and then use routing protocol
 167         on top.
 168
 169 config IPV6_SIT
 170         tristate "IPv6: IPv6-in-IPv4 tunnel (SIT driver)"
 171         select INET_TUNNEL
 172         select NET_IP_TUNNEL
 173         select IPV6_NDISC_NODETYPE
 174         default y
 175         ---help---
 176           Tunneling means encapsulating data of one protocol type within
 177           another protocol and sending it over a channel that understands the
 178           encapsulating protocol. This driver implements encapsulation of IPv6
 179           into IPv4 packets. This is useful if you want to connect two IPv6
 180           networks over an IPv4-only path.
 181
 182           Saying M here will produce a module called sit. If unsure, say Y.
 183
 184 config IPV6_SIT_6RD
 185         bool "IPv6: IPv6 Rapid Deployment (6RD)"
 186         depends on IPV6_SIT
 187         default n
 188         ---help---
 189           IPv6 Rapid Deployment (6rd; draft-ietf-softwire-ipv6-6rd) builds upon
 190           mechanisms of 6to4 (RFC3056) to enable a service provider to rapidly
 191           deploy IPv6 unicast service to IPv4 sites to which it provides
 192           customer premise equipment.  Like 6to4, it utilizes stateless IPv6 in
 193           IPv4 encapsulation in order to transit IPv4-only network
 194           infrastructure.  Unlike 6to4, a 6rd service provider uses an IPv6
 195           prefix of its own in place of the fixed 6to4 prefix.
 196
 197           With this option enabled, the SIT driver offers 6rd functionality by
 198           providing additional ioctl API to configure the IPv6 Prefix for in
 199           stead of static 2002::/16 for 6to4.
 200
 201           If unsure, say N.
 202
 203 config IPV6_NDISC_NODETYPE
 204         bool
 205
 206 config IPV6_TUNNEL
 207         tristate "IPv6: IP-in-IPv6 tunnel (RFC2473)"
 208         select INET6_TUNNEL
 209         ---help---
 210           Support for IPv6-in-IPv6 and IPv4-in-IPv6 tunnels described in
 211           RFC 2473.
 212
 213           If unsure, say N.
 214
 215 config IPV6_GRE
 216         tristate "IPv6: GRE tunnel"
 217         select IPV6_TUNNEL
 218         select NET_IP_TUNNEL
 219         ---help---
 220           Tunneling means encapsulating data of one protocol type within
 221           another protocol and sending it over a channel that understands the
 222           encapsulating protocol. This particular tunneling driver implements
 223           GRE (Generic Routing Encapsulation) and at this time allows
 224           encapsulating of IPv4 or IPv6 over existing IPv6 infrastructure.
 225           This driver is useful if the other endpoint is a Cisco router: Cisco
 226           likes GRE much better than the other Linux tunneling driver ("IP
 227           tunneling" above). In addition, GRE allows multicast redistribution
 228           through the tunnel.
 229
 230           Saying M here will produce a module called ip6_gre. If unsure, say N.
 231
 232 config IPV6_MULTIPLE_TABLES
 233         bool "IPv6: Multiple Routing Tables"
 234         select FIB_RULES
 235         ---help---
 236           Support multiple routing tables.
 237
 238 config IPV6_SUBTREES
 239         bool "IPv6: source address based routing"
 240         depends on IPV6_MULTIPLE_TABLES
 241         ---help---
 242           Enable routing by source address or prefix.
 243
 244           The destination address is still the primary routing key, so mixing
 245           normal and source prefix specific routes in the same routing table
 246           may sometimes lead to unintended routing behavior.  This can be
 247           avoided by defining different routing tables for the normal and
 248           source prefix specific routes.
 249
 250           If unsure, say N.
 251
 252 config IPV6_MROUTE
 253         bool "IPv6: multicast routing"
 254         depends on IPV6
 255         ---help---
 256           Experimental support for IPv6 multicast forwarding.
 257           If unsure, say N.
 258
 259 config IPV6_MROUTE_MULTIPLE_TABLES
 260         bool "IPv6: multicast policy routing"
 261         depends on IPV6_MROUTE
 262         select FIB_RULES
 263         help
 264           Normally, a multicast router runs a userspace daemon and decides
 265           what to do with a multicast packet based on the source and
 266           destination addresses. If you say Y here, the multicast router
 267           will also be able to take interfaces and packet marks into
 268           account and run multiple instances of userspace daemons
 269           simultaneously, each one handling a single table.
 270
 271           If unsure, say N.
 272
 273 config IPV6_PIMSM_V2
 274         bool "IPv6: PIM-SM version 2 support"
 275         depends on IPV6_MROUTE
 276         ---help---
 277           Support for IPv6 PIM multicast routing protocol PIM-SMv2.
 278           If unsure, say N.
 279
 280 endif # IPV6