···319319config NET_IPVTI320320 tristate "Virtual (secure) IP: tunneling"321321 select INET_TUNNEL322322+ select NET_IP_TUNNEL322323 depends on INET_XFRM_MODE_TUNNEL323324 ---help---324325 Tunneling means encapsulating data of one protocol type within
···156156config IPV6_SIT157157 tristate "IPv6: IPv6-in-IPv4 tunnel (SIT driver)"158158 select INET_TUNNEL159159+ select NET_IP_TUNNEL159160 select IPV6_NDISC_NODETYPE160161 default y161162 ---help---···202201config IPV6_GRE203202 tristate "IPv6: GRE tunnel"204203 select IPV6_TUNNEL204204+ select NET_IP_TUNNEL205205 ---help---206206 Tunneling means encapsulating data of one protocol type within207207 another protocol and sending it over a channel that understands the