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 INET6_XFRM_TUNNEL 96 tristate 97 select INET6_TUNNEL 98 default n 99 100config INET6_TUNNEL 101 tristate 102 default n 103 104config INET6_XFRM_MODE_TRANSPORT 105 tristate "IPv6: IPsec transport mode" 106 default IPV6 107 select XFRM 108 ---help--- 109 Support for IPsec transport mode. 110 111 If unsure, say Y. 112 113config INET6_XFRM_MODE_TUNNEL 114 tristate "IPv6: IPsec tunnel mode" 115 default IPV6 116 select XFRM 117 ---help--- 118 Support for IPsec tunnel mode. 119 120 If unsure, say Y. 121 122config INET6_XFRM_MODE_BEET 123 tristate "IPv6: IPsec BEET mode" 124 default IPV6 125 select XFRM 126 ---help--- 127 Support for IPsec BEET mode. 128 129 If unsure, say Y. 130 131config INET6_XFRM_MODE_ROUTEOPTIMIZATION 132 tristate "IPv6: MIPv6 route optimization mode" 133 select XFRM 134 ---help--- 135 Support for MIPv6 route optimization mode. 136 137config IPV6_VTI 138tristate "Virtual (secure) IPv6: tunneling" 139 select IPV6_TUNNEL 140 select NET_IP_TUNNEL 141 depends on INET6_XFRM_MODE_TUNNEL 142 ---help--- 143 Tunneling means encapsulating data of one protocol type within 144 another protocol and sending it over a channel that understands the 145 encapsulating protocol. This can be used with xfrm mode tunnel to give 146 the notion of a secure tunnel for IPSEC and then use routing protocol 147 on top. 148 149config IPV6_SIT 150 tristate "IPv6: IPv6-in-IPv4 tunnel (SIT driver)" 151 select INET_TUNNEL 152 select NET_IP_TUNNEL 153 select IPV6_NDISC_NODETYPE 154 default y 155 ---help--- 156 Tunneling means encapsulating data of one protocol type within 157 another protocol and sending it over a channel that understands the 158 encapsulating protocol. This driver implements encapsulation of IPv6 159 into IPv4 packets. This is useful if you want to connect two IPv6 160 networks over an IPv4-only path. 161 162 Saying M here will produce a module called sit. If unsure, say Y. 163 164config IPV6_SIT_6RD 165 bool "IPv6: IPv6 Rapid Deployment (6RD)" 166 depends on IPV6_SIT 167 default n 168 ---help--- 169 IPv6 Rapid Deployment (6rd; draft-ietf-softwire-ipv6-6rd) builds upon 170 mechanisms of 6to4 (RFC3056) to enable a service provider to rapidly 171 deploy IPv6 unicast service to IPv4 sites to which it provides 172 customer premise equipment. Like 6to4, it utilizes stateless IPv6 in 173 IPv4 encapsulation in order to transit IPv4-only network 174 infrastructure. Unlike 6to4, a 6rd service provider uses an IPv6 175 prefix of its own in place of the fixed 6to4 prefix. 176 177 With this option enabled, the SIT driver offers 6rd functionality by 178 providing additional ioctl API to configure the IPv6 Prefix for in 179 stead of static 2002::/16 for 6to4. 180 181 If unsure, say N. 182 183config IPV6_NDISC_NODETYPE 184 bool 185 186config IPV6_TUNNEL 187 tristate "IPv6: IP-in-IPv6 tunnel (RFC2473)" 188 select INET6_TUNNEL 189 ---help--- 190 Support for IPv6-in-IPv6 and IPv4-in-IPv6 tunnels described in 191 RFC 2473. 192 193 If unsure, say N. 194 195config IPV6_GRE 196 tristate "IPv6: GRE tunnel" 197 select IPV6_TUNNEL 198 select NET_IP_TUNNEL 199 ---help--- 200 Tunneling means encapsulating data of one protocol type within 201 another protocol and sending it over a channel that understands the 202 encapsulating protocol. This particular tunneling driver implements 203 GRE (Generic Routing Encapsulation) and at this time allows 204 encapsulating of IPv4 or IPv6 over existing IPv6 infrastructure. 205 This driver is useful if the other endpoint is a Cisco router: Cisco 206 likes GRE much better than the other Linux tunneling driver ("IP 207 tunneling" above). In addition, GRE allows multicast redistribution 208 through the tunnel. 209 210 Saying M here will produce a module called ip6_gre. If unsure, say N. 211 212config IPV6_MULTIPLE_TABLES 213 bool "IPv6: Multiple Routing Tables" 214 select FIB_RULES 215 ---help--- 216 Support multiple routing tables. 217 218config IPV6_SUBTREES 219 bool "IPv6: source address based routing" 220 depends on IPV6_MULTIPLE_TABLES 221 ---help--- 222 Enable routing by source address or prefix. 223 224 The destination address is still the primary routing key, so mixing 225 normal and source prefix specific routes in the same routing table 226 may sometimes lead to unintended routing behavior. This can be 227 avoided by defining different routing tables for the normal and 228 source prefix specific routes. 229 230 If unsure, say N. 231 232config IPV6_MROUTE 233 bool "IPv6: multicast routing" 234 depends on IPV6 235 ---help--- 236 Experimental support for IPv6 multicast forwarding. 237 If unsure, say N. 238 239config IPV6_MROUTE_MULTIPLE_TABLES 240 bool "IPv6: multicast policy routing" 241 depends on IPV6_MROUTE 242 select FIB_RULES 243 help 244 Normally, a multicast router runs a userspace daemon and decides 245 what to do with a multicast packet based on the source and 246 destination addresses. If you say Y here, the multicast router 247 will also be able to take interfaces and packet marks into 248 account and run multiple instances of userspace daemons 249 simultaneously, each one handling a single table. 250 251 If unsure, say N. 252 253config IPV6_PIMSM_V2 254 bool "IPv6: PIM-SM version 2 support" 255 depends on IPV6_MROUTE 256 ---help--- 257 Support for IPv6 PIM multicast routing protocol PIM-SMv2. 258 If unsure, say N. 259 260endif # IPV6 261