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         depends on INET6_XFRM_MODE_TUNNEL
 142         ---help---
 143         Tunneling means encapsulating data of one protocol type within
 144         another protocol and sending it over a channel that understands the
 145         encapsulating protocol. This can be used with xfrm mode tunnel to give
 146         the notion of a secure tunnel for IPSEC and then use routing protocol
 147         on top.
 148
 149 config IPV6_SIT
 150         tristate "IPv6: IPv6-in-IPv4 tunnel (SIT driver)"
 151         select INET_TUNNEL
 152         select NET_IP_TUNNEL
 153         select IPV6_NDISC_NODETYPE
 154         default y
 155         ---help---
 156           Tunneling means encapsulating data of one protocol type within
 157           another protocol and sending it over a channel that understands the
 158           encapsulating protocol. This driver implements encapsulation of IPv6
 159           into IPv4 packets. This is useful if you want to connect two IPv6
 160           networks over an IPv4-only path.
 161
 162           Saying M here will produce a module called sit. If unsure, say Y.
 163
 164 config IPV6_SIT_6RD
 165         bool "IPv6: IPv6 Rapid Deployment (6RD)"
 166         depends on IPV6_SIT
 167         default n
 168         ---help---
 169           IPv6 Rapid Deployment (6rd; draft-ietf-softwire-ipv6-6rd) builds upon
 170           mechanisms of 6to4 (RFC3056) to enable a service provider to rapidly
 171           deploy IPv6 unicast service to IPv4 sites to which it provides
 172           customer premise equipment.  Like 6to4, it utilizes stateless IPv6 in
 173           IPv4 encapsulation in order to transit IPv4-only network
 174           infrastructure.  Unlike 6to4, a 6rd service provider uses an IPv6
 175           prefix of its own in place of the fixed 6to4 prefix.
 176
 177           With this option enabled, the SIT driver offers 6rd functionality by
 178           providing additional ioctl API to configure the IPv6 Prefix for in
 179           stead of static 2002::/16 for 6to4.
 180
 181           If unsure, say N.
 182
 183 config IPV6_NDISC_NODETYPE
 184         bool
 185
 186 config IPV6_TUNNEL
 187         tristate "IPv6: IP-in-IPv6 tunnel (RFC2473)"
 188         select INET6_TUNNEL
 189         ---help---
 190           Support for IPv6-in-IPv6 and IPv4-in-IPv6 tunnels described in
 191           RFC 2473.
 192
 193           If unsure, say N.
 194
 195 config IPV6_GRE
 196         tristate "IPv6: GRE tunnel"
 197         select IPV6_TUNNEL
 198         select NET_IP_TUNNEL
 199         ---help---
 200           Tunneling means encapsulating data of one protocol type within
 201           another protocol and sending it over a channel that understands the
 202           encapsulating protocol. This particular tunneling driver implements
 203           GRE (Generic Routing Encapsulation) and at this time allows
 204           encapsulating of IPv4 or IPv6 over existing IPv6 infrastructure.
 205           This driver is useful if the other endpoint is a Cisco router: Cisco
 206           likes GRE much better than the other Linux tunneling driver ("IP
 207           tunneling" above). In addition, GRE allows multicast redistribution
 208           through the tunnel.
 209
 210           Saying M here will produce a module called ip6_gre. If unsure, say N.
 211
 212 config IPV6_MULTIPLE_TABLES
 213         bool "IPv6: Multiple Routing Tables"
 214         select FIB_RULES
 215         ---help---
 216           Support multiple routing tables.
 217
 218 config IPV6_SUBTREES
 219         bool "IPv6: source address based routing"
 220         depends on IPV6_MULTIPLE_TABLES
 221         ---help---
 222           Enable routing by source address or prefix.
 223
 224           The destination address is still the primary routing key, so mixing
 225           normal and source prefix specific routes in the same routing table
 226           may sometimes lead to unintended routing behavior.  This can be
 227           avoided by defining different routing tables for the normal and
 228           source prefix specific routes.
 229
 230           If unsure, say N.
 231
 232 config IPV6_MROUTE
 233         bool "IPv6: multicast routing"
 234         depends on IPV6
 235         ---help---
 236           Experimental support for IPv6 multicast forwarding.
 237           If unsure, say N.
 238
 239 config IPV6_MROUTE_MULTIPLE_TABLES
 240         bool "IPv6: multicast policy routing"
 241         depends on IPV6_MROUTE
 242         select FIB_RULES
 243         help
 244           Normally, a multicast router runs a userspace daemon and decides
 245           what to do with a multicast packet based on the source and
 246           destination addresses. If you say Y here, the multicast router
 247           will also be able to take interfaces and packet marks into
 248           account and run multiple instances of userspace daemons
 249           simultaneously, each one handling a single table.
 250
 251           If unsure, say N.
 252
 253 config IPV6_PIMSM_V2
 254         bool "IPv6: PIM-SM version 2 support"
 255         depends on IPV6_MROUTE
 256         ---help---
 257           Support for IPv6 PIM multicast routing protocol PIM-SMv2.
 258           If unsure, say N.
 259
 260 endif # IPV6