rule analyser: add msg if rule is ipv4 or ipv6 only

src/detect-engine-analyzer.c

@@ -431,6 +431,8 @@ void EngineAnalysisRules(Signature *s, char *line)
     uint32_t rule_flow_toserver = 0;
     uint32_t rule_flow_toclient = 0;
     uint32_t rule_flow_nostream = 0;
+    uint32_t rule_ipv4_only = 0;
+    uint32_t rule_ipv6_only = 0;
     uint32_t rule_flowbits = 0;
     uint32_t rule_flowint = 0;
     //uint32_t rule_flowvar = 0;
@@ -479,6 +481,14 @@ void EngineAnalysisRules(Signature *s, char *line)
     if (s->flags & SIG_FLAG_REQUIRE_STREAM) {
         stream_buf += 1;
     }
+
+    if (s->proto.flags & DETECT_PROTO_IPV4) {
+        rule_ipv4_only += 1;
+    }
+    if (s->proto.flags & DETECT_PROTO_IPV6) {
+        rule_ipv6_only += 1;
+    }
+
     for (list_id = 0; list_id < DETECT_SM_LIST_MAX; list_id++) {
 
         SigMatch *sm = NULL;
@@ -718,7 +728,9 @@ void EngineAnalysisRules(Signature *s, char *line)
         fprintf(rule_engine_analysis_FD, "== Sid: %u ==\n", s->id);
         fprintf(rule_engine_analysis_FD, "%s\n", line);
 
-        if (s->flags & SIG_FLAG_IPONLY) fprintf(rule_engine_analysis_FD, "   Rule is ip only.\n");
+        if (s->flags & SIG_FLAG_IPONLY) fprintf(rule_engine_analysis_FD, "    Rule is ip only.\n");
+        if (rule_ipv6_only) fprintf(rule_engine_analysis_FD, "    Rule is IPv6 only.\n");
+        if (rule_ipv4_only) fprintf(rule_engine_analysis_FD, "    Rule is IPv4 only.\n");
         if (packet_buf) fprintf(rule_engine_analysis_FD, "    Rule matches on packets.\n");
         if (!rule_flow_nostream && stream_buf && (rule_flow || rule_flowbits || rule_content || rule_pcre)) {
             fprintf(rule_engine_analysis_FD, "    Rule matches on reassembled stream.\n");