diff --git a/include/proto/log.h b/include/proto/log.h
index 14dfc5b..e8b57d8 100644
--- a/include/proto/log.h
+++ b/include/proto/log.h
@@ -138,6 +138,11 @@
  */
 char *lf_port(char *dst, struct sockaddr *sockaddr, size_t size, struct logformat_node *node);
 
+/*
+ * Write hostname, log_tag and pid to the log string
+ */
+char *lf_host_tag_pid(char *dst, const char *hostname, const char *log_tag, int pid, size_t size);
+
 
 #endif /* _PROTO_LOG_H */
 
diff --git a/include/types/log.h b/include/types/log.h
index 6707aa6..0214ae6 100644
--- a/include/types/log.h
+++ b/include/types/log.h
@@ -30,7 +30,7 @@
 
 #define NB_LOG_FACILITIES       24
 #define NB_LOG_LEVELS           8
-#define NB_MSG_IOVEC_ELEMENTS   2
+#define NB_MSG_IOVEC_ELEMENTS   3
 #define SYSLOG_PORT             514
 #define UNIQUEID_LEN            128
 
diff --git a/include/types/proxy.h b/include/types/proxy.h
index 170e6f7..1400126 100644
--- a/include/types/proxy.h
+++ b/include/types/proxy.h
@@ -346,6 +346,7 @@
 	struct list logsrvs;
 	struct list logformat; 			/* log_format linked list */
 	char *log_tag;                          /* override default syslog tag */
+	struct chunk log_htp;			/* a syslog header part that contains hostname, log_tag and pid */
 	char *header_unique_id; 		/* unique-id header */
 	struct list format_unique_id;		/* unique-id format */
 	int to_log;				/* things to be logged (LW_*) */