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diff --git a/external/unbound/util/log.h b/external/unbound/util/log.h
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+/*
+ * util/log.h - logging service
+ *
+ * Copyright (c) 2007, NLnet Labs. All rights reserved.
+ *
+ * This software is open source.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ * Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 
+ * Neither the name of the NLNET LABS nor the names of its contributors may
+ * be used to endorse or promote products derived from this software without
+ * specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+ * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/**
+ * \file
+ *
+ * This file contains logging functions.
+ */
+
+#ifndef UTIL_LOG_H
+#define UTIL_LOG_H
+struct sldns_buffer;
+
+/**
+ * verbosity value:
+ */
+enum verbosity_value {
+ /** 0 - no verbose messages */
+	NO_VERBOSE = 0,
+ /** 1 - operational information */
+ 	VERB_OPS,
+ /** 2 - detailed information */
+ 	VERB_DETAIL,
+ /** 3 - query level information */
+ 	VERB_QUERY,
+ /** 4 - algorithm level information */
+ 	VERB_ALGO,
+ /** 5 - querier client information */
+	VERB_CLIENT
+};
+
+/** The global verbosity setting */
+extern enum verbosity_value verbosity;
+
+/**
+ * log a verbose message, pass the level for this message.
+ * It has printf formatted arguments. No trailing newline is needed.
+ * @param level: verbosity level for this message, compared to global 
+ *	verbosity setting.
+ * @param format: printf-style format string. Arguments follow.
+ */
+void verbose(enum verbosity_value level, 
+	const char* format, ...) ATTR_FORMAT(printf, 2, 3);
+
+/**
+ * call this to initialize logging services.
+ * @param filename: if NULL stderr is used.
+ * @param use_syslog: set to true to ignore filename and use syslog(3).
+ * @param chrootdir: to which directory we have been chrooted, if any.
+ */
+void log_init(const char* filename, int use_syslog, const char* chrootdir);
+
+/**
+ * Set logging to go to the specified file *.
+ * This setting does not affect the use_syslog setting.
+ * @param f: to that file, or pass NULL to disable logging.
+ */
+void log_file(FILE *f);
+
+/**
+ * Init a thread (will print this number for the thread log entries).
+ * Must be called from the thread itself. If not called 0 is printed.
+ * @param num: number to print for this thread. Owned by caller, must
+ *	continue to exist.
+ */
+void log_thread_set(int* num);
+
+/**
+ * Set identity to print, default is 'unbound'. 
+ * @param id: string to print. Name of executable.
+ */
+void log_ident_set(const char* id);
+
+/**
+ * Set the time value to print in log entries.
+ * @param t: the point is copied and used to find the time.
+ * 	if NULL, time(2) is used.
+ */
+void log_set_time(time_t* t);
+
+/**
+ * Set if the time value is printed ascii or decimal in log entries.
+ * @param use_asc: if true, ascii is printed, otherwise decimal.
+ *	If the conversion fails or you have no time functions, 
+ *	decimal is printed.
+ */
+void log_set_time_asc(int use_asc);
+
+/**
+ * Log informational message.
+ * Pass printf formatted arguments. No trailing newline is needed.
+ * @param format: printf-style format string. Arguments follow.
+ */
+void log_info(const char* format, ...) ATTR_FORMAT(printf, 1, 2);
+
+/**
+ * Log error message.
+ * Pass printf formatted arguments. No trailing newline is needed.
+ * @param format: printf-style format string. Arguments follow.
+ */
+void log_err(const char* format, ...) ATTR_FORMAT(printf, 1, 2);
+
+/**
+ * Log warning message.
+ * Pass printf formatted arguments. No trailing newline is needed.
+ * @param format: printf-style format string. Arguments follow.
+ */
+void log_warn(const char* format, ...) ATTR_FORMAT(printf, 1, 2);
+
+/**
+ * Log a hex-string to the log. Can be any length.
+ * performs mallocs to do so, slow. But debug useful.
+ * @param msg: string desc to accompany the hexdump.
+ * @param data: data to dump in hex format.
+ * @param length: length of data.
+ */
+void log_hex(const char* msg, void* data, size_t length);
+
+/**
+ * Easy alternative for log_hex, takes a sldns_buffer.
+ * @param level: verbosity level for this message, compared to global 
+ *	verbosity setting.
+ * @param msg: string desc to print
+ * @param buf: the buffer.
+ */
+void log_buf(enum verbosity_value level, const char* msg, struct sldns_buffer* buf);
+
+/**
+ * Log fatal error message, and exit the current process.
+ * Pass printf formatted arguments. No trailing newline is needed.
+ * @param format: printf-style format string. Arguments follow.
+ */
+void fatal_exit(const char* format, ...) ATTR_FORMAT(printf, 1, 2);
+
+/**
+ * va_list argument version of log_info.
+ * @param pri: priority type, for example 5 (INFO).
+ * @param type: string to designate type of message (info, error).
+ * @param format: the printf style format to print. no newline.
+ * @param args: arguments for format string.
+ */
+void log_vmsg(int pri, const char* type, const char* format, va_list args);
+
+/**
+ * an assertion that is thrown to the logfile.
+ */
+#ifdef UNBOUND_DEBUG
+#  define log_assert(x) \
+	do { if(!(x)) \
+		fatal_exit("%s:%d: %s: assertion %s failed", \
+			__FILE__, __LINE__, __func__, #x); \
+	} while(0);
+#else
+#  define log_assert(x) /*nothing*/
+#endif
+
+#ifdef USE_WINSOCK
+/**
+ * Convert WSA error into string.
+ * @param err: from WSAGetLastError()
+ * @return: string.
+ */
+char* wsa_strerror(DWORD err);
+#endif /* USE_WINSOCK */
+
+#endif /* UTIL_LOG_H */