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_PRIVACY
  25         bool "IPv6: Privacy Extensions (RFC 3041) support"
  26         ---help---
  27           Privacy Extensions for Stateless Address Autoconfiguration in IPv6
  28           support.  With this option, additional periodically-altered
  29           pseudo-random global-scope unicast address(es) will be assigned to
  30           your interface(s).
  31
  32           We use our standard pseudo-random algorithm to generate the
  33           randomized interface identifier, instead of one described in RFC 3041.
  34
  35           By default the kernel does not generate temporary addresses.
  36           To use temporary addresses, do
  37
  38                 echo 2 >/proc/sys/net/ipv6/conf/all/use_tempaddr
  39
  40           See <file:Documentation/networking/ip-sysctl.txt> for details.
  41
  42 config IPV6_ROUTER_PREF
  43         bool "IPv6: Router Preference (RFC 4191) support"
  44         ---help---
  45           Router Preference is an optional extension to the Router
  46           Advertisement message which improves the ability of hosts
  47           to pick an appropriate router, especially when the hosts
  48           are placed in a multi-homed network.
  49
  50           If unsure, say N.
  51
  52 config IPV6_ROUTE_INFO
  53         bool "IPv6: Route Information (RFC 4191) support"
  54         depends on IPV6_ROUTER_PREF
  55         ---help---
  56           This is experimental support of Route Information.
  57
  58           If unsure, say N.
  59
  60 config IPV6_OPTIMISTIC_DAD
  61         bool "IPv6: Enable RFC 4429 Optimistic DAD"
  62         ---help---
  63           This is experimental support for optimistic Duplicate
  64           Address Detection.  It allows for autoconfigured addresses
  65           to be used more quickly.
  66
  67           If unsure, say N.
  68
  69 config INET6_AH
  70         tristate "IPv6: AH transformation"
  71         select XFRM_ALGO
  72         select CRYPTO
  73         select CRYPTO_HMAC
  74         select CRYPTO_MD5
  75         select CRYPTO_SHA1
  76         ---help---
  77           Support for IPsec AH.
  78
  79           If unsure, say Y.
  80
  81 config INET6_ESP
  82         tristate "IPv6: ESP transformation"
  83         select XFRM_ALGO
  84         select CRYPTO
  85         select CRYPTO_AUTHENC
  86         select CRYPTO_HMAC
  87         select CRYPTO_MD5
  88         select CRYPTO_CBC
  89         select CRYPTO_SHA1
  90         select CRYPTO_DES
  91         ---help---
  92           Support for IPsec ESP.
  93
  94           If unsure, say Y.
  95
  96 config INET6_IPCOMP
  97         tristate "IPv6: IPComp transformation"
  98         select INET6_XFRM_TUNNEL
  99         select XFRM_IPCOMP
 100         ---help---
 101           Support for IP Payload Compression Protocol (IPComp) (RFC3173),
 102           typically needed for IPsec.
 103
 104           If unsure, say Y.
 105
 106 config IPV6_MIP6
 107         tristate "IPv6: Mobility"
 108         select XFRM
 109         ---help---
 110           Support for IPv6 Mobility described in RFC 3775.
 111
 112           If unsure, say N.
 113
 114 config INET6_XFRM_TUNNEL
 115         tristate
 116         select INET6_TUNNEL
 117         default n
 118
 119 config INET6_TUNNEL
 120         tristate
 121         default n
 122
 123 config INET6_XFRM_MODE_TRANSPORT
 124         tristate "IPv6: IPsec transport mode"
 125         default IPV6
 126         select XFRM
 127         ---help---
 128           Support for IPsec transport mode.
 129
 130           If unsure, say Y.
 131
 132 config INET6_XFRM_MODE_TUNNEL
 133         tristate "IPv6: IPsec tunnel mode"
 134         default IPV6
 135         select XFRM
 136         ---help---
 137           Support for IPsec tunnel mode.
 138
 139           If unsure, say Y.
 140
 141 config INET6_XFRM_MODE_BEET
 142         tristate "IPv6: IPsec BEET mode"
 143         default IPV6
 144         select XFRM
 145         ---help---
 146           Support for IPsec BEET mode.
 147
 148           If unsure, say Y.
 149
 150 config INET6_XFRM_MODE_ROUTEOPTIMIZATION
 151         tristate "IPv6: MIPv6 route optimization mode"
 152         select XFRM
 153         ---help---
 154           Support for MIPv6 route optimization mode.
 155
 156 config IPV6_SIT
 157         tristate "IPv6: IPv6-in-IPv4 tunnel (SIT driver)"
 158         select INET_TUNNEL
 159         select IPV6_NDISC_NODETYPE
 160         default y
 161         ---help---
 162           Tunneling means encapsulating data of one protocol type within
 163           another protocol and sending it over a channel that understands the
 164           encapsulating protocol. This driver implements encapsulation of IPv6
 165           into IPv4 packets. This is useful if you want to connect two IPv6
 166           networks over an IPv4-only path.
 167
 168           Saying M here will produce a module called sit. If unsure, say Y.
 169
 170 config IPV6_SIT_6RD
 171         bool "IPv6: IPv6 Rapid Deployment (6RD)"
 172         depends on IPV6_SIT
 173         default n
 174         ---help---
 175           IPv6 Rapid Deployment (6rd; draft-ietf-softwire-ipv6-6rd) builds upon
 176           mechanisms of 6to4 (RFC3056) to enable a service provider to rapidly
 177           deploy IPv6 unicast service to IPv4 sites to which it provides
 178           customer premise equipment.  Like 6to4, it utilizes stateless IPv6 in
 179           IPv4 encapsulation in order to transit IPv4-only network
 180           infrastructure.  Unlike 6to4, a 6rd service provider uses an IPv6
 181           prefix of its own in place of the fixed 6to4 prefix.
 182
 183           With this option enabled, the SIT driver offers 6rd functionality by
 184           providing additional ioctl API to configure the IPv6 Prefix for in
 185           stead of static 2002::/16 for 6to4.
 186
 187           If unsure, say N.
 188
 189 config IPV6_NDISC_NODETYPE
 190         bool
 191
 192 config IPV6_TUNNEL
 193         tristate "IPv6: IP-in-IPv6 tunnel (RFC2473)"
 194         select INET6_TUNNEL
 195         ---help---
 196           Support for IPv6-in-IPv6 and IPv4-in-IPv6 tunnels described in
 197           RFC 2473.
 198
 199           If unsure, say N.
 200
 201 config IPV6_GRE
 202         tristate "IPv6: GRE tunnel"
 203         select IPV6_TUNNEL
 204         ---help---
 205           Tunneling means encapsulating data of one protocol type within
 206           another protocol and sending it over a channel that understands the
 207           encapsulating protocol. This particular tunneling driver implements
 208           GRE (Generic Routing Encapsulation) and at this time allows
 209           encapsulating of IPv4 or IPv6 over existing IPv6 infrastructure.
 210           This driver is useful if the other endpoint is a Cisco router: Cisco
 211           likes GRE much better than the other Linux tunneling driver ("IP
 212           tunneling" above). In addition, GRE allows multicast redistribution
 213           through the tunnel.
 214
 215           Saying M here will produce a module called ip6_gre. If unsure, say N.
 216
 217 config IPV6_MULTIPLE_TABLES
 218         bool "IPv6: Multiple Routing Tables"
 219         select FIB_RULES
 220         ---help---
 221           Support multiple routing tables.
 222
 223 config IPV6_SUBTREES
 224         bool "IPv6: source address based routing"
 225         depends on IPV6_MULTIPLE_TABLES
 226         ---help---
 227           Enable routing by source address or prefix.
 228
 229           The destination address is still the primary routing key, so mixing
 230           normal and source prefix specific routes in the same routing table
 231           may sometimes lead to unintended routing behavior.  This can be
 232           avoided by defining different routing tables for the normal and
 233           source prefix specific routes.
 234
 235           If unsure, say N.
 236
 237 config IPV6_MROUTE
 238         bool "IPv6: multicast routing"
 239         depends on IPV6
 240         ---help---
 241           Experimental support for IPv6 multicast forwarding.
 242           If unsure, say N.
 243
 244 config IPV6_MROUTE_MULTIPLE_TABLES
 245         bool "IPv6: multicast policy routing"
 246         depends on IPV6_MROUTE
 247         select FIB_RULES
 248         help
 249           Normally, a multicast router runs a userspace daemon and decides
 250           what to do with a multicast packet based on the source and
 251           destination addresses. If you say Y here, the multicast router
 252           will also be able to take interfaces and packet marks into
 253           account and run multiple instances of userspace daemons
 254           simultaneously, each one handling a single table.
 255
 256           If unsure, say N.
 257
 258 config IPV6_PIMSM_V2
 259         bool "IPv6: PIM-SM version 2 support"
 260         depends on IPV6_MROUTE
 261         ---help---
 262           Support for IPv6 PIM multicast routing protocol PIM-SMv2.
 263           If unsure, say N.
 264
 265 endif # IPV6