gre: Support GRE over IPv6

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / net / ipv6 / Kconfig

diff --git a/net/ipv6/Kconfig b/net/ipv6/Kconfig
index 5728695b54492dc2d275458b8db786f410e94002..4f7fe7270e3703226de121041d1e5e96a5b127df 100644 (file)
--- a/net/ipv6/Kconfig
+++ b/net/ipv6/Kconfig
@@ -201,6 +201,22 @@ config IPV6_TUNNEL
 
          If unsure, say N.
 
+config IPV6_GRE
+       tristate "IPv6: GRE tunnel"
+       select IPV6_TUNNEL
+       ---help---
+         Tunneling means encapsulating data of one protocol type within
+         another protocol and sending it over a channel that understands the
+         encapsulating protocol. This particular tunneling driver implements
+         GRE (Generic Routing Encapsulation) and at this time allows
+         encapsulating of IPv4 or IPv6 over existing IPv6 infrastructure.
+         This driver is useful if the other endpoint is a Cisco router: Cisco
+         likes GRE much better than the other Linux tunneling driver ("IP
+         tunneling" above). In addition, GRE allows multicast redistribution
+         through the tunnel.
+
+         Saying M here will produce a module called ip6_gre. If unsure, say N.
+
 config IPV6_MULTIPLE_TABLES
        bool "IPv6: Multiple Routing Tables"
        depends on EXPERIMENTAL