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Linux/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         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 
150 config 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 
165 config 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 
184 config IPV6_NDISC_NODETYPE
185         bool
186 
187 config 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 
196 config 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 
213 config IPV6_MULTIPLE_TABLES
214         bool "IPv6: Multiple Routing Tables"
215         select FIB_RULES
216         ---help---
217           Support multiple routing tables.
218 
219 config 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 
233 config 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 
240 config 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 
254 config 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 
261 endif # IPV6

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