diff --git a/src/arp.c b/src/arp.c
index f910cdf..cb18d1f 100644
--- a/src/arp.c
+++ b/src/arp.c
@@ -1,6 +1,6 @@
 /* arp.c - arp ping checking
  *
- * Copyright (c) 2010-2017 Nicholas J. Kain <njkain at gmail dot com>
+ * Copyright (c) 2010-2018 Nicholas J. Kain <njkain at gmail dot com>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/src/arp.h b/src/arp.h
index 2b4bc61..160c074 100644
--- a/src/arp.h
+++ b/src/arp.h
@@ -1,6 +1,6 @@
 /* arp.h - functions to call the interface change daemon
  *
- * Copyright (c) 2010-2017 Nicholas J. Kain <njkain at gmail dot com>
+ * Copyright (c) 2010-2018 Nicholas J. Kain <njkain at gmail dot com>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/src/dhcp.c b/src/dhcp.c
index 9aa29c4..295d227 100644
--- a/src/dhcp.c
+++ b/src/dhcp.c
@@ -1,6 +1,6 @@
 /* dhcp.c - general DHCP protocol handling
  *
- * Copyright (c) 2004-2017 Nicholas J. Kain <njkain at gmail dot com>
+ * Copyright (c) 2004-2018 Nicholas J. Kain <njkain at gmail dot com>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/src/dhcp.h b/src/dhcp.h
index aa36d68..23bc3ee 100644
--- a/src/dhcp.h
+++ b/src/dhcp.h
@@ -1,6 +1,6 @@
 /* dhcp.h - general DHCP protocol handling
  *
- * Copyright (c) 2004-2017 Nicholas J. Kain <njkain at gmail dot com>
+ * Copyright (c) 2004-2018 Nicholas J. Kain <njkain at gmail dot com>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/src/duiaid.c b/src/duiaid.c
index b84f61a..6328418 100644
--- a/src/duiaid.c
+++ b/src/duiaid.c
@@ -1,6 +1,6 @@
 /* duiaid.c - DUID/IAID storage and generation for clientids
  *
- * Copyright (c) 2014-2017 Nicholas J. Kain <njkain at gmail dot com>
+ * Copyright (c) 2014-2018 Nicholas J. Kain <njkain at gmail dot com>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/src/duiaid.h b/src/duiaid.h
index 5b22d44..a321248 100644
--- a/src/duiaid.h
+++ b/src/duiaid.h
@@ -1,6 +1,6 @@
 /* duiaid.h - DUID/IAID storage and generation for clientids
  *
- * Copyright (c) 2014-2017 Nicholas J. Kain <njkain at gmail dot com>
+ * Copyright (c) 2014-2018 Nicholas J. Kain <njkain at gmail dot com>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/src/ifchange.c b/src/ifchange.c
index 011f70c..7edc254 100644
--- a/src/ifchange.c
+++ b/src/ifchange.c
@@ -1,6 +1,6 @@
 /* ifchange.c - functions to call the interface change daemon
  *
- * Copyright (c) 2004-2017 Nicholas J. Kain <njkain at gmail dot com>
+ * Copyright (c) 2004-2018 Nicholas J. Kain <njkain at gmail dot com>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/src/ifchange.h b/src/ifchange.h
index f909fe8..5ab8ea9 100644
--- a/src/ifchange.h
+++ b/src/ifchange.h
@@ -1,6 +1,6 @@
 /* ifchange.h - functions to call the interface change daemon
  *
- * Copyright (c) 2004-2017 Nicholas J. Kain <njkain at gmail dot com>
+ * Copyright (c) 2004-2018 Nicholas J. Kain <njkain at gmail dot com>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/src/ifchd-parse.h b/src/ifchd-parse.h
index 39adcb6..5b3e248 100644
--- a/src/ifchd-parse.h
+++ b/src/ifchd-parse.h
@@ -1,6 +1,6 @@
 /* ifchd-parse.h - interface change daemon parser
  *
- * Copyright (c) 2004-2017 Nicholas J. Kain <njkain at gmail dot com>
+ * Copyright (c) 2004-2018 Nicholas J. Kain <njkain at gmail dot com>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/src/ifchd-parse.rl b/src/ifchd-parse.rl
index 8aa31c9..d9a73a9 100644
--- a/src/ifchd-parse.rl
+++ b/src/ifchd-parse.rl
@@ -1,6 +1,6 @@
 /* ifchd-parse.rl - interface change daemon parser
  *
- * Copyright (c) 2004-2017 Nicholas J. Kain <njkain at gmail dot com>
+ * Copyright (c) 2004-2018 Nicholas J. Kain <njkain at gmail dot com>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/src/ifchd.c b/src/ifchd.c
index 019558d..ab4df92 100644
--- a/src/ifchd.c
+++ b/src/ifchd.c
@@ -1,6 +1,6 @@
 /* ifchd.c - interface change daemon
  *
- * Copyright (c) 2004-2017 Nicholas J. Kain <njkain at gmail dot com>
+ * Copyright (c) 2004-2018 Nicholas J. Kain <njkain at gmail dot com>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/src/ifset.c b/src/ifset.c
index d32dae0..e701ac5 100644
--- a/src/ifset.c
+++ b/src/ifset.c
@@ -1,6 +1,6 @@
 /* ifset.c - Linux-specific net interface settings include
  *
- * Copyright (c) 2004-2017 Nicholas J. Kain <njkain at gmail dot com>
+ * Copyright (c) 2004-2018 Nicholas J. Kain <njkain at gmail dot com>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/src/ifset.h b/src/ifset.h
index ecdc44d..4ab8e72 100644
--- a/src/ifset.h
+++ b/src/ifset.h
@@ -1,6 +1,6 @@
 /* ifset.h - Linux-specific net interface settings include
  *
- * Copyright (c) 2004-2017 Nicholas J. Kain <njkain at gmail dot com>
+ * Copyright (c) 2004-2018 Nicholas J. Kain <njkain at gmail dot com>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/src/leasefile.c b/src/leasefile.c
index 75e7611..93f1c78 100644
--- a/src/leasefile.c
+++ b/src/leasefile.c
@@ -1,6 +1,6 @@
 /* leasefile.c - functions for writing the lease file
  *
- * Copyright (c) 2011-2017 Nicholas J. Kain <njkain at gmail dot com>
+ * Copyright (c) 2011-2018 Nicholas J. Kain <njkain at gmail dot com>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/src/leasefile.h b/src/leasefile.h
index c364337..05610b3 100644
--- a/src/leasefile.h
+++ b/src/leasefile.h
@@ -1,6 +1,6 @@
 /* leasefile.h - functions for writing the lease file
  *
- * Copyright (c) 2011-2017 Nicholas J. Kain <njkain at gmail dot com>
+ * Copyright (c) 2011-2018 Nicholas J. Kain <njkain at gmail dot com>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/src/ndhc.c b/src/ndhc.c
index e16b032..4f59cde 100644
--- a/src/ndhc.c
+++ b/src/ndhc.c
@@ -1,6 +1,6 @@
 /* ndhc.c - DHCP client
  *
- * Copyright (c) 2004-2017 Nicholas J. Kain <njkain at gmail dot com>
+ * Copyright (c) 2004-2018 Nicholas J. Kain <njkain at gmail dot com>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -98,7 +98,7 @@ void set_client_addr(const char v[static 1]) { cs.clientAddr = inet_addr(v); }
 void print_version(void)
 {
     printf("ndhc %s, dhcp client.\n", NDHC_VERSION);
-    printf("Copyright (c) 2004-2017 Nicholas J. Kain\n"
+    printf("Copyright (c) 2004-2018 Nicholas J. Kain\n"
            "All rights reserved.\n\n"
            "Redistribution and use in source and binary forms, with or without\n"
            "modification, are permitted provided that the following conditions are met:\n\n"
@@ -125,7 +125,7 @@ void show_usage(void)
 {
     printf(
 "ndhc " NDHC_VERSION ", dhcp client.  Licensed under 2-clause BSD.\n"
-"Copyright (C) 2004-2017 Nicholas J. Kain\n"
+"Copyright (C) 2004-2018 Nicholas J. Kain\n"
 "Usage: ndhc [OPTIONS]\n\n"
 "  -c, --config=FILE               Path to ndhc configuration file\n"
 "  -I, --clientid=CLIENTID         Client identifier\n"
diff --git a/src/ndhc.h b/src/ndhc.h
index 77230ff..76409ae 100644
--- a/src/ndhc.h
+++ b/src/ndhc.h
@@ -1,6 +1,6 @@
 /* ndhc.h - DHCP client
  *
- * Copyright (c) 2014-2017 Nicholas J. Kain <njkain at gmail dot com>
+ * Copyright (c) 2014-2018 Nicholas J. Kain <njkain at gmail dot com>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/src/netlink.c b/src/netlink.c
index bc9db0f..5b41a8f 100644
--- a/src/netlink.c
+++ b/src/netlink.c
@@ -1,6 +1,6 @@
 /* netlink.c - netlink physical link notification handling and info retrieval
  *
- * Copyright (c) 2011-2017 Nicholas J. Kain <njkain at gmail dot com>
+ * Copyright (c) 2011-2018 Nicholas J. Kain <njkain at gmail dot com>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/src/netlink.h b/src/netlink.h
index 5d42dac..13700f2 100644
--- a/src/netlink.h
+++ b/src/netlink.h
@@ -1,6 +1,6 @@
 /* netlink.h - netlink physical link notification handling and info retrieval
  *
- * Copyright (c) 2011-2017 Nicholas J. Kain <njkain at gmail dot com>
+ * Copyright (c) 2011-2018 Nicholas J. Kain <njkain at gmail dot com>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/src/nl.c b/src/nl.c
index 1bfe3d5..68f01d2 100644
--- a/src/nl.c
+++ b/src/nl.c
@@ -1,6 +1,6 @@
 /* nl.c - low level netlink protocol functions
  *
- * Copyright (c) 2011-2017 Nicholas J. Kain <njkain at gmail dot com>
+ * Copyright (c) 2011-2018 Nicholas J. Kain <njkain at gmail dot com>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/src/nl.h b/src/nl.h
index d227228..0b2a836 100644
--- a/src/nl.h
+++ b/src/nl.h
@@ -1,6 +1,6 @@
 /* nl.h - low level netlink protocol functions
  *
- * Copyright (c) 2011-2017 Nicholas J. Kain <njkain at gmail dot com>
+ * Copyright (c) 2011-2018 Nicholas J. Kain <njkain at gmail dot com>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/src/options.c b/src/options.c
index 96d6058..a58e01e 100644
--- a/src/options.c
+++ b/src/options.c
@@ -1,6 +1,6 @@
 /* options.c - DHCP options handling
  *
- * Copyright (c) 2004-2017 Nicholas J. Kain <njkain at gmail dot com>
+ * Copyright (c) 2004-2018 Nicholas J. Kain <njkain at gmail dot com>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/src/options.h b/src/options.h
index c2d42ba..2279ade 100644
--- a/src/options.h
+++ b/src/options.h
@@ -1,6 +1,6 @@
 /* options.h - DHCP options handling
  *
- * Copyright (c) 2004-2017 Nicholas J. Kain <njkain at gmail dot com>
+ * Copyright (c) 2004-2018 Nicholas J. Kain <njkain at gmail dot com>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/src/rfkill.c b/src/rfkill.c
index ba4fed8..d8ef0af 100644
--- a/src/rfkill.c
+++ b/src/rfkill.c
@@ -1,6 +1,6 @@
 /* rfkill.c - rfkill interface and handling
  *
- * Copyright (c) 2015-2017 Nicholas J. Kain <njkain at gmail dot com>
+ * Copyright (c) 2015-2018 Nicholas J. Kain <njkain at gmail dot com>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/src/rfkill.h b/src/rfkill.h
index b66adf6..10d53a2 100644
--- a/src/rfkill.h
+++ b/src/rfkill.h
@@ -2,7 +2,7 @@
 #define NDHC_RFKILL_H_
 /* rfkill.h - rfkill interface and handling
  *
- * Copyright (c) 2015-2017 Nicholas J. Kain <njkain at gmail dot com>
+ * Copyright (c) 2015-2018 Nicholas J. Kain <njkain at gmail dot com>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/src/sockd.c b/src/sockd.c
index c3507a0..db916d1 100644
--- a/src/sockd.c
+++ b/src/sockd.c
@@ -1,6 +1,6 @@
 /* sockd.c - privsep socket creation daemon
  *
- * Copyright (c) 2014-2017 Nicholas J. Kain <njkain at gmail dot com>
+ * Copyright (c) 2014-2018 Nicholas J. Kain <njkain at gmail dot com>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/src/state.c b/src/state.c
index 00ce4f0..e7d6571 100644
--- a/src/state.c
+++ b/src/state.c
@@ -1,6 +1,6 @@
 /* state.c - high level DHCP state machine
  *
- * Copyright (c) 2011-2017 Nicholas J. Kain <njkain at gmail dot com>
+ * Copyright (c) 2011-2018 Nicholas J. Kain <njkain at gmail dot com>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/src/state.h b/src/state.h
index 91d8919..43621ad 100644
--- a/src/state.h
+++ b/src/state.h
@@ -1,6 +1,6 @@
 /* state.h - high level DHCP state machine
  *
- * Copyright (c) 2011-2017 Nicholas J. Kain <njkain at gmail dot com>
+ * Copyright (c) 2011-2018 Nicholas J. Kain <njkain at gmail dot com>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/src/sys.c b/src/sys.c
index 2cee10e..b596adf 100644
--- a/src/sys.c
+++ b/src/sys.c
@@ -1,6 +1,6 @@
 /* sys.c - linux-specific signal and epoll functions
  *
- * Copyright (c) 2010-2017 Nicholas J. Kain <njkain at gmail dot com>
+ * Copyright (c) 2010-2018 Nicholas J. Kain <njkain at gmail dot com>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/src/sys.h b/src/sys.h
index e1275cc..b7d3c58 100644
--- a/src/sys.h
+++ b/src/sys.h
@@ -1,6 +1,6 @@
 /* sys.h - linux-specific signal and epoll functions
  *
- * Copyright (c) 2010-2017 Nicholas J. Kain <njkain at gmail dot com>
+ * Copyright (c) 2010-2018 Nicholas J. Kain <njkain at gmail dot com>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without