diff --git a/chapter01/changelog.xml b/chapter01/changelog.xml
index 94cc20b42..5f0086190 100644
--- a/chapter01/changelog.xml
+++ b/chapter01/changelog.xml
@@ -43,6 +43,36 @@
     appropriate for the entry or if needed the entire day's listitem.
 -->
 
+    <listitem>
+      <para>2018-04-06</para>
+      <itemizedlist>
+        <listitem>
+           <para>[bdubbs] - Add libelf to rationale. Fixes 
+           <ulink url="&lfs-ticket-root;4252">#4252</ulink>.</para>
+        </listitem>
+        <listitem>
+           <para>[bdubbs] - Update to man-db-2.8.3.  Fixes 
+           <ulink url="&lfs-ticket-root;4255">#4255</ulink>.</para>
+        </listitem>
+        <listitem>
+           <para>[bdubbs] - Update to iproute2-4.16.0.  Fixes 
+           <ulink url="&lfs-ticket-root;4254">#4254</ulink>.</para>
+        </listitem>
+        <listitem>
+           <para>[bdubbs] - Update to linux-4.16.  Fixes 
+           <ulink url="&lfs-ticket-root;4250">#4250</ulink>.</para>
+        </listitem>
+        <listitem>
+           <para>[bdubbs] - Update to procps-ng-3.3.13.  Fixes 
+           <ulink url="&lfs-ticket-root;4263">#4253</ulink>.</para>
+        </listitem>
+        <listitem>
+           <para>[bdubbs] - Update to sed-4.5.  Fixes 
+           <ulink url="&lfs-ticket-root;4251">#4251</ulink>.</para>
+        </listitem>
+      </itemizedlist>
+    </listitem>
+
     <listitem>
       <para>2018-03-23</para>
       <itemizedlist>
diff --git a/chapter01/whatsnew.xml b/chapter01/whatsnew.xml
index 3ea2696e2..f157c82dd 100644
--- a/chapter01/whatsnew.xml
+++ b/chapter01/whatsnew.xml
@@ -131,9 +131,9 @@
     <!--<listitem>
       <para>Intltool-&intltool-version;</para>
     </listitem>-->
-    <!--<listitem>
+    <listitem>
       <para>IPRoute2-&iproute2-version;</para>
-   </listitem>-->
+   </listitem>
     <!--<listitem>
       <para>Kbd-&kbd-version;</para>
     </listitem>-->
@@ -197,9 +197,9 @@
     <!--<listitem>
       <para>Pkg-config-&pkgconfig-version;</para>
     </listitem>-->
-    <!--<listitem>
+    <listitem>
       <para>Procps-ng-&procps-ng-version;</para>
-    </listitem>-->
+    </listitem>
     <!--<listitem>
       <para>Psmisc-&psmisc-version;</para>
     </listitem>-->
@@ -209,9 +209,9 @@
     <!--<listitem>
       <para>Readline-&readline-version;</para>
     </listitem>-->
-    <!--<listitem>
+    <listitem>
       <para>Sed-&sed-version;</para>
-    </listitem>-->
+    </listitem>
     <!--<listitem>
       <para>Shadow-&shadow-version;</para>
     </listitem>-->
diff --git a/chapter06/procps.xml b/chapter06/procps.xml
index 0df21e4a3..59bf0864c 100644
--- a/chapter06/procps.xml
+++ b/chapter06/procps.xml
@@ -83,9 +83,6 @@ sed -i '/set tty/d' testsuite/pkill.test/pkill.exp
 rm testsuite/pgrep.test/pgrep.exp
 make check</userinput></screen>
 
-    <para>One ps test may fail, but passes if the tests are rerun at 
-    the end of Chapter&nbsp;6.</para>
-
     <para>Install the package:</para>
 
 <screen><userinput remap="install">make install</userinput></screen>
diff --git a/general.ent b/general.ent
index f12966f26..dfcef8633 100644
--- a/general.ent
+++ b/general.ent
@@ -1,13 +1,13 @@
-<!ENTITY version         "SVN-20180330">
+<!ENTITY version         "SVN-20180406">
 <!ENTITY short-version   "svn">  <!-- Used below in &blfs-book; 
                                       Change to x.y for release but not -rc releases -->
 <!ENTITY generic-version "development"> <!-- Use "development"  or "x.y[-pre{x}]" -->
 
-<!ENTITY versiond        "20180330-systemd">
+<!ENTITY versiond        "20180406-systemd">
 <!ENTITY short-versiond  "systemd">
 <!ENTITY generic-versiond "systemd"> 
 
-<!ENTITY releasedate     "March 30, 2018">
+<!ENTITY releasedate     "April 6, 2018">
 
 <!ENTITY copyrightdate   "1999-2018"><!-- jhalfs needs a literal dash, not &ndash; -->
 <!ENTITY milestone       "8.3">
diff --git a/packages.ent b/packages.ent
index 67fd95ebc..86c744392 100644
--- a/packages.ent
+++ b/packages.ent
@@ -342,10 +342,10 @@
 <!ENTITY intltool-ch6-du "1.5 MB">
 <!ENTITY intltool-ch6-sbu "less than 0.1 SBU">
 
-<!ENTITY iproute2-version "4.15.0">
-<!ENTITY iproute2-size "634 KB">
+<!ENTITY iproute2-version "4.16.0">
+<!ENTITY iproute2-size "646 KB">
 <!ENTITY iproute2-url "&kernel;linux/utils/net/iproute2/iproute2-&iproute2-version;.tar.xz">
-<!ENTITY iproute2-md5 "0681bf4664b2649ad4e12551a3a7a1f9">
+<!ENTITY iproute2-md5 "1f12a70d767ef77ffa2d1a0c4ce48f1a">
 <!ENTITY iproute2-home "&kernel;linux/utils/net/iproute2/">
 <!ENTITY iproute2-ch6-du "12 MB">
 <!ENTITY iproute2-ch6-sbu "0.2 SBU">
@@ -415,13 +415,13 @@
 <!ENTITY libtool-ch6-sbu "1.8 SBU">
 
 <!ENTITY linux-major-version "4">
-<!ENTITY linux-minor-version "15">
-<!ENTITY linux-patch-version "14">
-<!-- <!ENTITY linux-version "&linux-major-version;.&linux-minor-version;"> -->
-<!ENTITY linux-version "&linux-major-version;.&linux-minor-version;.&linux-patch-version;">
-<!ENTITY linux-size "99,814 KB">
+<!ENTITY linux-minor-version "16">
+<!ENTITY linux-patch-version "0">
+<!ENTITY linux-version "&linux-major-version;.&linux-minor-version;"> 
+<!--<!ENTITY linux-version "&linux-major-version;.&linux-minor-version;.&linux-patch-version;"> -->
+<!ENTITY linux-size "100,606 KB">
 <!ENTITY linux-url "&kernel;linux/kernel/v&linux-major-version;.x/linux-&linux-version;.tar.xz">
-<!ENTITY linux-md5 "ccd088e7ce376055350b4ad967cb21b7">
+<!ENTITY linux-md5 "1357fb4ee7c288fdeac5d4e0048f5c18">
 <!ENTITY linux-home "http://www.kernel.org/">
 <!-- measured for 4.8.3 / gcc-6.2.0 on x86_64 : minimum is
  allnoconfig extended for a hopefully-bootable build on desktop machine,
@@ -454,10 +454,10 @@
 <!ENTITY make-ch6-du "12 MB">
 <!ENTITY make-ch6-sbu "0.6 SBU">
 
-<!ENTITY man-db-version "2.8.2">
-<!ENTITY man-db-size "1,585 KB">
+<!ENTITY man-db-version "2.8.3">
+<!ENTITY man-db-size "1,587 KB">
 <!ENTITY man-db-url "&savannah;/releases/man-db/man-db-&man-db-version;.tar.xz">
-<!ENTITY man-db-md5 "300788c0939a3b41d50302b04f730fa3">
+<!ENTITY man-db-md5 "6f3055e18fdd1ce5cbbdb30403991ec7">
 <!ENTITY man-db-home "http://www.nongnu.org/man-db/">
 <!ENTITY man-db-ch6-du "31 MB">
 <!ENTITY man-db-ch6-sbu "0.4 SBU">
@@ -548,10 +548,10 @@
 <!ENTITY pkgconfig-ch6-du "28 MB">
 <!ENTITY pkgconfig-ch6-sbu "0.3 SBU">
 
-<!ENTITY procps-ng-version "3.3.12">
-<!ENTITY procps-ng-size "826 KB">
+<!ENTITY procps-ng-version "3.3.13">
+<!ENTITY procps-ng-size "881 KB">
 <!ENTITY procps-ng-url "https://sourceforge.net/projects/procps-ng/files/Production/procps-ng-&procps-ng-version;.tar.xz">
-<!ENTITY procps-ng-md5 "957e42e8b193490b2111252e4a2b443c">
+<!ENTITY procps-ng-md5 "ad20fe97b3f45797dd43e2d3e046ff32">
 <!ENTITY procps-ng-home "https://sourceforge.net/projects/procps-ng">
 <!ENTITY procps-ng-ch6-du "15 MB">
 <!ENTITY procps-ng-ch6-sbu "0.1 SBU">
@@ -583,10 +583,10 @@
 <!ENTITY readline-ch6-du "15 MB">
 <!ENTITY readline-ch6-sbu "0.1 SBU">
 
-<!ENTITY sed-version "4.4">
-<!ENTITY sed-size "1,154 KB">
+<!ENTITY sed-version "4.5">
+<!ENTITY sed-size "1,245 KB">
 <!ENTITY sed-url "&gnu;sed/sed-&sed-version;.tar.xz">
-<!ENTITY sed-md5 "e0c583d4c380059abd818cd540fe6938">
+<!ENTITY sed-md5 "ade8f8c2c548bf41f74db2dcfc37e4e3">
 <!ENTITY sed-home "&gnu-software;sed/">
 <!ENTITY sed-ch5-du "16 MB">
 <!ENTITY sed-ch5-sbu "0.1 SBU">
diff --git a/prologue/why.xml b/prologue/why.xml
index f6c8ed614..3cb365d2e 100644
--- a/prologue/why.xml
+++ b/prologue/why.xml
@@ -326,6 +326,16 @@
         </para>
       </listitem>
 
+      <listitem>
+        <para>Libelf</para>
+
+        <para>The elfutils project provides libraries and tools for ELF files
+        and DWARF data.  Most utilities in this package are available in
+        other packages, but the library is needed to build the Linux
+        kernel using the default (and most efficient) configuration.</para>
+
+      </listitem>
+
       <listitem>
         <para>Libffi</para>