Add definitions for the ICMPV6 type of Extended Echo Request and
Extended Echo Reply, as defined by sections 2 and 3 of RFC 8335.

Signed-off-by: Andreas Roeseler <andreas.a.roese...@gmail.com>
---
 include/uapi/linux/icmpv6.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/include/uapi/linux/icmpv6.h b/include/uapi/linux/icmpv6.h
index 0564fd7ccde4..ecaece3af38d 100644
--- a/include/uapi/linux/icmpv6.h
+++ b/include/uapi/linux/icmpv6.h
@@ -140,6 +140,9 @@ struct icmp6hdr {
 #define ICMPV6_UNK_OPTION              2
 #define ICMPV6_HDR_INCOMP              3
 
+/* Codes for EXT_ECHO (PROBE) */
+#define ICMPV6_EXT_ECHO_REQUEST                160
+#define ICMPV6_EXT_ECHO_REPLY          161
 /*
  *     constants for (set|get)sockopt
  */
-- 
2.17.1

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