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 y 9 ---help--- 10 Support for IP version 6 (IPv6). 11 12 For general information about IPv6, see 13 <https://en.wikipedia.org/wiki/IPv6>. 14 For specific information about IPv6 under Linux, see 15 Documentation/networking/ipv6.txt and read the HOWTO at 16 <http://www.tldp.org/HOWTO/Linux+IPv6-HOWTO/> 17 18 To compile this protocol support as a module, choose M here: the 19 module will be called ipv6. 20 21if IPV6 22 23config IPV6_ROUTER_PREF 24 bool "IPv6: Router Preference (RFC 4191) support" 25 ---help--- 26 Router Preference is an optional extension to the Router 27 Advertisement message which improves the ability of hosts 28 to pick an appropriate router, especially when the hosts 29 are placed in a multi-homed network. 30 31 If unsure, say N. 32 33config IPV6_ROUTE_INFO 34 bool "IPv6: Route Information (RFC 4191) support" 35 depends on IPV6_ROUTER_PREF 36 ---help--- 37 This is experimental support of Route Information. 38 39 If unsure, say N. 40 41config IPV6_OPTIMISTIC_DAD 42 bool "IPv6: Enable RFC 4429 Optimistic DAD" 43 ---help--- 44 This is experimental support for optimistic Duplicate 45 Address Detection. It allows for autoconfigured addresses 46 to be used more quickly. 47 48 If unsure, say N. 49 50config INET6_AH 51 tristate "IPv6: AH transformation" 52 select XFRM_ALGO 53 select CRYPTO 54 select CRYPTO_HMAC 55 select CRYPTO_MD5 56 select CRYPTO_SHA1 57 ---help--- 58 Support for IPsec AH. 59 60 If unsure, say Y. 61 62config INET6_ESP 63 tristate "IPv6: ESP transformation" 64 select XFRM_ALGO 65 select CRYPTO 66 select CRYPTO_AUTHENC 67 select CRYPTO_HMAC 68 select CRYPTO_MD5 69 select CRYPTO_CBC 70 select CRYPTO_SHA1 71 select CRYPTO_DES 72 ---help--- 73 Support for IPsec ESP. 74 75 If unsure, say Y. 76 77config INET6_IPCOMP 78 tristate "IPv6: IPComp transformation" 79 select INET6_XFRM_TUNNEL 80 select XFRM_IPCOMP 81 ---help--- 82 Support for IP Payload Compression Protocol (IPComp) (RFC3173), 83 typically needed for IPsec. 84 85 If unsure, say Y. 86 87config IPV6_MIP6 88 tristate "IPv6: Mobility" 89 select XFRM 90 ---help--- 91 Support for IPv6 Mobility described in RFC 3775. 92 93 If unsure, say N. 94 95config IPV6_ILA 96 tristate "IPv6: Identifier Locator Addressing (ILA)" 97 select LWTUNNEL 98 ---help--- 99 Support for IPv6 Identifier Locator Addressing (ILA). 100 101 ILA is a mechanism to do network virtualization without 102 encapsulation. The basic concept of ILA is that we split an 103 IPv6 address into a 64 bit locator and 64 bit identifier. The 104 identifier is the identity of an entity in communication 105 ("who") and the locator expresses the location of the 106 entity ("where"). 107 108 ILA can be configured using the "encap ila" option with 109 "ip -6 route" command. ILA is described in 110 https://tools.ietf.org/html/draft-herbert-nvo3-ila-00. 111 112 If unsure, say N. 113 114config INET6_XFRM_TUNNEL 115 tristate 116 select INET6_TUNNEL 117 default n 118 119config INET6_TUNNEL 120 tristate 121 default n 122 123config INET6_XFRM_MODE_TRANSPORT 124 tristate "IPv6: IPsec transport mode" 125 default IPV6 126 select XFRM 127 ---help--- 128 Support for IPsec transport mode. 129 130 If unsure, say Y. 131 132config INET6_XFRM_MODE_TUNNEL 133 tristate "IPv6: IPsec tunnel mode" 134 default IPV6 135 select XFRM 136 ---help--- 137 Support for IPsec tunnel mode. 138 139 If unsure, say Y. 140 141config INET6_XFRM_MODE_BEET 142 tristate "IPv6: IPsec BEET mode" 143 default IPV6 144 select XFRM 145 ---help--- 146 Support for IPsec BEET mode. 147 148 If unsure, say Y. 149 150config INET6_XFRM_MODE_ROUTEOPTIMIZATION 151 tristate "IPv6: MIPv6 route optimization mode" 152 select XFRM 153 ---help--- 154 Support for MIPv6 route optimization mode. 155 156config IPV6_VTI 157tristate "Virtual (secure) IPv6: tunneling" 158 select IPV6_TUNNEL 159 select NET_IP_TUNNEL 160 depends on INET6_XFRM_MODE_TUNNEL 161 ---help--- 162 Tunneling means encapsulating data of one protocol type within 163 another protocol and sending it over a channel that understands the 164 encapsulating protocol. This can be used with xfrm mode tunnel to give 165 the notion of a secure tunnel for IPSEC and then use routing protocol 166 on top. 167 168config IPV6_SIT 169 tristate "IPv6: IPv6-in-IPv4 tunnel (SIT driver)" 170 select INET_TUNNEL 171 select NET_IP_TUNNEL 172 select IPV6_NDISC_NODETYPE 173 default y 174 ---help--- 175 Tunneling means encapsulating data of one protocol type within 176 another protocol and sending it over a channel that understands the 177 encapsulating protocol. This driver implements encapsulation of IPv6 178 into IPv4 packets. This is useful if you want to connect two IPv6 179 networks over an IPv4-only path. 180 181 Saying M here will produce a module called sit. If unsure, say Y. 182 183config IPV6_SIT_6RD 184 bool "IPv6: IPv6 Rapid Deployment (6RD)" 185 depends on IPV6_SIT 186 default n 187 ---help--- 188 IPv6 Rapid Deployment (6rd; draft-ietf-softwire-ipv6-6rd) builds upon 189 mechanisms of 6to4 (RFC3056) to enable a service provider to rapidly 190 deploy IPv6 unicast service to IPv4 sites to which it provides 191 customer premise equipment. Like 6to4, it utilizes stateless IPv6 in 192 IPv4 encapsulation in order to transit IPv4-only network 193 infrastructure. Unlike 6to4, a 6rd service provider uses an IPv6 194 prefix of its own in place of the fixed 6to4 prefix. 195 196 With this option enabled, the SIT driver offers 6rd functionality by 197 providing additional ioctl API to configure the IPv6 Prefix for in 198 stead of static 2002::/16 for 6to4. 199 200 If unsure, say N. 201 202config IPV6_NDISC_NODETYPE 203 bool 204 205config IPV6_TUNNEL 206 tristate "IPv6: IP-in-IPv6 tunnel (RFC2473)" 207 select INET6_TUNNEL 208 ---help--- 209 Support for IPv6-in-IPv6 and IPv4-in-IPv6 tunnels described in 210 RFC 2473. 211 212 If unsure, say N. 213 214config IPV6_GRE 215 tristate "IPv6: GRE tunnel" 216 select IPV6_TUNNEL 217 select NET_IP_TUNNEL 218 ---help--- 219 Tunneling means encapsulating data of one protocol type within 220 another protocol and sending it over a channel that understands the 221 encapsulating protocol. This particular tunneling driver implements 222 GRE (Generic Routing Encapsulation) and at this time allows 223 encapsulating of IPv4 or IPv6 over existing IPv6 infrastructure. 224 This driver is useful if the other endpoint is a Cisco router: Cisco 225 likes GRE much better than the other Linux tunneling driver ("IP 226 tunneling" above). In addition, GRE allows multicast redistribution 227 through the tunnel. 228 229 Saying M here will produce a module called ip6_gre. If unsure, say N. 230 231config IPV6_MULTIPLE_TABLES 232 bool "IPv6: Multiple Routing Tables" 233 select FIB_RULES 234 ---help--- 235 Support multiple routing tables. 236 237config IPV6_SUBTREES 238 bool "IPv6: source address based routing" 239 depends on IPV6_MULTIPLE_TABLES 240 ---help--- 241 Enable routing by source address or prefix. 242 243 The destination address is still the primary routing key, so mixing 244 normal and source prefix specific routes in the same routing table 245 may sometimes lead to unintended routing behavior. This can be 246 avoided by defining different routing tables for the normal and 247 source prefix specific routes. 248 249 If unsure, say N. 250 251config IPV6_MROUTE 252 bool "IPv6: multicast routing" 253 depends on IPV6 254 ---help--- 255 Experimental support for IPv6 multicast forwarding. 256 If unsure, say N. 257 258config IPV6_MROUTE_MULTIPLE_TABLES 259 bool "IPv6: multicast policy routing" 260 depends on IPV6_MROUTE 261 select FIB_RULES 262 help 263 Normally, a multicast router runs a userspace daemon and decides 264 what to do with a multicast packet based on the source and 265 destination addresses. If you say Y here, the multicast router 266 will also be able to take interfaces and packet marks into 267 account and run multiple instances of userspace daemons 268 simultaneously, each one handling a single table. 269 270 If unsure, say N. 271 272config IPV6_PIMSM_V2 273 bool "IPv6: PIM-SM version 2 support" 274 depends on IPV6_MROUTE 275 ---help--- 276 Support for IPv6 PIM multicast routing protocol PIM-SMv2. 277 If unsure, say N. 278 279endif # IPV6 280