From c439eccdf8a11d030373a6a0640957f1a3c91358 Mon Sep 17 00:00:00 2001
From: Steven <steven-chien@users.noreply.github.com>
Date: Fri, 13 Oct 2017 05:03:10 +0200
Subject: [PATCH] Implemented matching for ND protocol related ICMPv6 messages
 (#257)

- ROUTER_SOLICIT -> ROUTER_ADVERTIST
- NEIGHBOUR_SOLICIT -> NEIGHBOUR_ADVERTIST

Check if code equals zero according to https://tools.ietf.org/html/rfc4861#page-39
---
 src/icmpv6.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/icmpv6.cpp b/src/icmpv6.cpp
index 9e2e50a..449e01b 100644
--- a/src/icmpv6.cpp
+++ b/src/icmpv6.cpp
@@ -279,6 +279,10 @@ bool ICMPv6::matches_response(const uint8_t* ptr, uint32_t total_sz) const {
         return hdr_ptr->u_echo.identifier == header_.u_echo.identifier &&
                hdr_ptr->u_echo.sequence == header_.u_echo.sequence;
     }
+    else if ( (type() == ROUTER_SOLICIT && hdr_ptr->type == ROUTER_ADVERT) ||
+        (type() == NEIGHBOUR_SOLICIT && hdr_ptr->type == NEIGHBOUR_ADVERT) ) {
+	return hdr_ptr->code == 0;
+    }
     return false;
 }