5 # IPv6 as module will cause a CRASH if you try to unload it
7 tristate "The IPv6 protocol"
10 This is complemental support for the IP version 6.
11 You will still be able to do traditional IPv4 networking as well.
13 For general information about IPv6, see
14 <http://playground.sun.com/pub/ipng/html/ipng-main.html>.
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/>.
19 To compile this protocol support as a module, choose M here: the
20 module will be called ipv6.
25 bool "IPv6: Privacy Extensions (RFC 3041) support"
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
32 We use our standard pseudo-random algorithm to generate the
33 randomized interface identifier, instead of one described in RFC 3041.
35 By default the kernel does not generate temporary addresses.
36 To use temporary addresses, do
38 echo 2 >/proc/sys/net/ipv6/conf/all/use_tempaddr
40 See <file:Documentation/networking/ip-sysctl.txt> for details.
42 config IPV6_ROUTER_PREF
43 bool "IPv6: Router Preference (RFC 4191) support"
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.
52 config IPV6_ROUTE_INFO
53 bool "IPv6: Route Information (RFC 4191) support (EXPERIMENTAL)"
54 depends on IPV6_ROUTER_PREF && EXPERIMENTAL
56 This is experimental support of Route Information.
60 config IPV6_OPTIMISTIC_DAD
61 bool "IPv6: Enable RFC 4429 Optimistic DAD (EXPERIMENTAL)"
62 depends on EXPERIMENTAL
64 This is experimental support for optimistic Duplicate
65 Address Detection. It allows for autoconfigured addresses
66 to be used more quickly.
71 tristate "IPv6: AH transformation"
83 tristate "IPv6: ESP transformation"
93 Support for IPsec ESP.
98 tristate "IPv6: IPComp transformation"
99 select INET6_XFRM_TUNNEL
102 Support for IP Payload Compression Protocol (IPComp) (RFC3173),
103 typically needed for IPsec.
108 tristate "IPv6: Mobility (EXPERIMENTAL)"
109 depends on EXPERIMENTAL
112 Support for IPv6 Mobility described in RFC 3775.
116 config INET6_XFRM_TUNNEL
125 config INET6_XFRM_MODE_TRANSPORT
126 tristate "IPv6: IPsec transport mode"
130 Support for IPsec transport mode.
134 config INET6_XFRM_MODE_TUNNEL
135 tristate "IPv6: IPsec tunnel mode"
139 Support for IPsec tunnel mode.
143 config INET6_XFRM_MODE_BEET
144 tristate "IPv6: IPsec BEET mode"
148 Support for IPsec BEET mode.
152 config INET6_XFRM_MODE_ROUTEOPTIMIZATION
153 tristate "IPv6: MIPv6 route optimization mode (EXPERIMENTAL)"
154 depends on EXPERIMENTAL
157 Support for MIPv6 route optimization mode.
160 tristate "IPv6: IPv6-in-IPv4 tunnel (SIT driver)"
162 select IPV6_NDISC_NODETYPE
165 Tunneling means encapsulating data of one protocol type within
166 another protocol and sending it over a channel that understands the
167 encapsulating protocol. This driver implements encapsulation of IPv6
168 into IPv4 packets. This is useful if you want to connect two IPv6
169 networks over an IPv4-only path.
171 Saying M here will produce a module called sit. If unsure, say Y.
174 bool "IPv6: IPv6 Rapid Deployment (6RD) (EXPERIMENTAL)"
175 depends on IPV6_SIT && EXPERIMENTAL
178 IPv6 Rapid Deployment (6rd; draft-ietf-softwire-ipv6-6rd) builds upon
179 mechanisms of 6to4 (RFC3056) to enable a service provider to rapidly
180 deploy IPv6 unicast service to IPv4 sites to which it provides
181 customer premise equipment. Like 6to4, it utilizes stateless IPv6 in
182 IPv4 encapsulation in order to transit IPv4-only network
183 infrastructure. Unlike 6to4, a 6rd service provider uses an IPv6
184 prefix of its own in place of the fixed 6to4 prefix.
186 With this option enabled, the SIT driver offers 6rd functionality by
187 providing additional ioctl API to configure the IPv6 Prefix for in
188 stead of static 2002::/16 for 6to4.
192 config IPV6_NDISC_NODETYPE
196 tristate "IPv6: IP-in-IPv6 tunnel (RFC2473)"
199 Support for IPv6-in-IPv6 and IPv4-in-IPv6 tunnels described in
205 tristate "IPv6: GRE tunnel"
208 Tunneling means encapsulating data of one protocol type within
209 another protocol and sending it over a channel that understands the
210 encapsulating protocol. This particular tunneling driver implements
211 GRE (Generic Routing Encapsulation) and at this time allows
212 encapsulating of IPv4 or IPv6 over existing IPv6 infrastructure.
213 This driver is useful if the other endpoint is a Cisco router: Cisco
214 likes GRE much better than the other Linux tunneling driver ("IP
215 tunneling" above). In addition, GRE allows multicast redistribution
218 Saying M here will produce a module called ip6_gre. If unsure, say N.
220 config IPV6_MULTIPLE_TABLES
221 bool "IPv6: Multiple Routing Tables"
222 depends on EXPERIMENTAL
225 Support multiple routing tables.
228 bool "IPv6: source address based routing"
229 depends on IPV6_MULTIPLE_TABLES
231 Enable routing by source address or prefix.
233 The destination address is still the primary routing key, so mixing
234 normal and source prefix specific routes in the same routing table
235 may sometimes lead to unintended routing behavior. This can be
236 avoided by defining different routing tables for the normal and
237 source prefix specific routes.
242 bool "IPv6: multicast routing (EXPERIMENTAL)"
243 depends on IPV6 && EXPERIMENTAL
245 Experimental support for IPv6 multicast forwarding.
248 config IPV6_MROUTE_MULTIPLE_TABLES
249 bool "IPv6: multicast policy routing"
250 depends on IPV6_MROUTE
253 Normally, a multicast router runs a userspace daemon and decides
254 what to do with a multicast packet based on the source and
255 destination addresses. If you say Y here, the multicast router
256 will also be able to take interfaces and packet marks into
257 account and run multiple instances of userspace daemons
258 simultaneously, each one handling a single table.
263 bool "IPv6: PIM-SM version 2 support (EXPERIMENTAL)"
264 depends on IPV6_MROUTE
266 Support for IPv6 PIM multicast routing protocol PIM-SMv2.