1#
2# IPv6 configuration
3#
4
5#   IPv6 as module will cause a CRASH if you try to unload it
6menuconfig 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
22if IPV6
23
24config 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
34config 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
42config 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
51config 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
63config 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
78config 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
88config 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
96config INET6_XFRM_TUNNEL
97	tristate
98	select INET6_TUNNEL
99	default n
100
101config INET6_TUNNEL
102	tristate
103	default n
104
105config 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
114config 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
123config 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
132config INET6_XFRM_MODE_ROUTEOPTIMIZATION
133	tristate "IPv6: MIPv6 route optimization mode"
134	select XFRM
135	---help---
136	  Support for MIPv6 route optimization mode.
137
138config IPV6_VTI
139tristate "Virtual (secure) IPv6: tunneling"
140	select IPV6_TUNNEL
141	select NET_IP_TUNNEL
142	depends on INET6_XFRM_MODE_TUNNEL
143	---help---
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
148	on top.
149
150config IPV6_SIT
151	tristate "IPv6: IPv6-in-IPv4 tunnel (SIT driver)"
152	select INET_TUNNEL
153	select NET_IP_TUNNEL
154	select IPV6_NDISC_NODETYPE
155	default y
156	---help---
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.
162
163	  Saying M here will produce a module called sit. If unsure, say Y.
164
165config IPV6_SIT_6RD
166	bool "IPv6: IPv6 Rapid Deployment (6RD)"
167	depends on IPV6_SIT
168	default n
169	---help---
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.
177
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.
181
182	  If unsure, say N.
183
184config IPV6_NDISC_NODETYPE
185	bool
186
187config IPV6_TUNNEL
188	tristate "IPv6: IP-in-IPv6 tunnel (RFC2473)"
189	select INET6_TUNNEL
190	---help---
191	  Support for IPv6-in-IPv6 and IPv4-in-IPv6 tunnels described in
192	  RFC 2473.
193
194	  If unsure, say N.
195
196config IPV6_GRE
197	tristate "IPv6: GRE tunnel"
198	select IPV6_TUNNEL
199	select NET_IP_TUNNEL
200	---help---
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
209	  through the tunnel.
210
211	  Saying M here will produce a module called ip6_gre. If unsure, say N.
212
213config IPV6_MULTIPLE_TABLES
214	bool "IPv6: Multiple Routing Tables"
215	select FIB_RULES
216	---help---
217	  Support multiple routing tables.
218
219config IPV6_SUBTREES
220	bool "IPv6: source address based routing"
221	depends on IPV6_MULTIPLE_TABLES
222	---help---
223	  Enable routing by source address or prefix.
224
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.
230
231	  If unsure, say N.
232
233config IPV6_MROUTE
234	bool "IPv6: multicast routing"
235	depends on IPV6
236	---help---
237	  Experimental support for IPv6 multicast forwarding.
238	  If unsure, say N.
239
240config IPV6_MROUTE_MULTIPLE_TABLES
241	bool "IPv6: multicast policy routing"
242	depends on IPV6_MROUTE
243	select FIB_RULES
244	help
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.
251
252	  If unsure, say N.
253
254config IPV6_PIMSM_V2
255	bool "IPv6: PIM-SM version 2 support"
256	depends on IPV6_MROUTE
257	---help---
258	  Support for IPv6 PIM multicast routing protocol PIM-SMv2.
259	  If unsure, say N.
260
261endif # IPV6
262