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-rw-r--r--src/libhydra/kernel/kernel_interface.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/libhydra/kernel/kernel_interface.h b/src/libhydra/kernel/kernel_interface.h
index 2e8a4c082..f73578167 100644
--- a/src/libhydra/kernel/kernel_interface.h
+++ b/src/libhydra/kernel/kernel_interface.h
@@ -67,6 +67,8 @@ enum kernel_feature_t {
KERNEL_ESP_V3_TFC = (1<<0),
/** Networking requires an "exclude" route for IKE/ESP packets */
KERNEL_REQUIRE_EXCLUDE_ROUTE = (1<<1),
+ /** IPsec implementation requires UDP encapsulation of ESP packets */
+ KERNEL_REQUIRE_UDP_ENCAPSULATION = (1<<2),
};
/**