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 <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/>.
19 To compile this protocol support as a module, choose M here: the
20 module will be called ipv6.
24 config IPV6_ROUTER_PREF
25 bool "IPv6: Router Preference (RFC 4191) support"
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.
34 config IPV6_ROUTE_INFO
35 bool "IPv6: Route Information (RFC 4191) support"
36 depends on IPV6_ROUTER_PREF
38 This is experimental support of Route Information.
42 config IPV6_OPTIMISTIC_DAD
43 bool "IPv6: Enable RFC 4429 Optimistic DAD"
45 This is experimental support for optimistic Duplicate
46 Address Detection. It allows for autoconfigured addresses
47 to be used more quickly.
52 tristate "IPv6: AH transformation"
64 tristate "IPv6: ESP transformation"
74 Support for IPsec ESP.
79 tristate "IPv6: IPComp transformation"
80 select INET6_XFRM_TUNNEL
83 Support for IP Payload Compression Protocol (IPComp) (RFC3173),
84 typically needed for IPsec.
89 tristate "IPv6: Mobility"
92 Support for IPv6 Mobility described in RFC 3775.
96 config INET6_XFRM_TUNNEL
105 config INET6_XFRM_MODE_TRANSPORT
106 tristate "IPv6: IPsec transport mode"
110 Support for IPsec transport mode.
114 config INET6_XFRM_MODE_TUNNEL
115 tristate "IPv6: IPsec tunnel mode"
119 Support for IPsec tunnel mode.
123 config INET6_XFRM_MODE_BEET
124 tristate "IPv6: IPsec BEET mode"
128 Support for IPsec BEET mode.
132 config INET6_XFRM_MODE_ROUTEOPTIMIZATION
133 tristate "IPv6: MIPv6 route optimization mode"
136 Support for MIPv6 route optimization mode.
139 tristate "Virtual (secure) IPv6: tunneling"
142 depends on INET6_XFRM_MODE_TUNNEL
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
151 tristate "IPv6: IPv6-in-IPv4 tunnel (SIT driver)"
154 select IPV6_NDISC_NODETYPE
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.
163 Saying M here will produce a module called sit. If unsure, say Y.
166 bool "IPv6: IPv6 Rapid Deployment (6RD)"
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.
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.
184 config IPV6_NDISC_NODETYPE
188 tristate "IPv6: IP-in-IPv6 tunnel (RFC2473)"
191 Support for IPv6-in-IPv6 and IPv4-in-IPv6 tunnels described in
197 tristate "IPv6: GRE tunnel"
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
211 Saying M here will produce a module called ip6_gre. If unsure, say N.
213 config IPV6_MULTIPLE_TABLES
214 bool "IPv6: Multiple Routing Tables"
217 Support multiple routing tables.
220 bool "IPv6: source address based routing"
221 depends on IPV6_MULTIPLE_TABLES
223 Enable routing by source address or prefix.
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.
234 bool "IPv6: multicast routing"
237 Experimental support for IPv6 multicast forwarding.
240 config IPV6_MROUTE_MULTIPLE_TABLES
241 bool "IPv6: multicast policy routing"
242 depends on IPV6_MROUTE
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.
255 bool "IPv6: PIM-SM version 2 support"
256 depends on IPV6_MROUTE
258 Support for IPv6 PIM multicast routing protocol PIM-SMv2.