diff --git a/Makefile b/Makefile
index 1ca4192..781acb2 100644
--- a/Makefile
+++ b/Makefile
@@ -89,10 +89,6 @@ ADOC_STDARG=-b $(shell pwd)/asciidoc/pve-html -f asciidoc/asciidoc-pve.conf -a i
 
 BROWSER?=xdg-open
 
-
-%-nwdiag.svg: %.nwdiag
-	nwdiag -T svg $*.nwdiag -o $@;
-
 README.html: README.adoc
 	asciidoc -a toc ${ADOC_STDARG} -o $@ $<
 
diff --git a/images/cluster-nwdiag.svg b/images/cluster-nwdiag.svg
deleted file mode 100644
index a9b35bb..0000000
--- a/images/cluster-nwdiag.svg
+++ /dev/null
@@ -1,56 +0,0 @@
-<?xml version='1.0' encoding='UTF-8'?>
-<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.0//EN" "http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd">
-<svg viewBox="0 0 760 588" xmlns="http://www.w3.org/2000/svg" xmlns:inkspace="http://www.inkscape.org/namespaces/inkscape" xmlns:xlink="http://www.w3.org/1999/xlink">
-  <defs id="defs_block">
-    <filter height="1.504" id="filter_blur" inkspace:collect="always" width="1.1575" x="-0.07875" y="-0.252">
-      <feGaussianBlur id="feGaussianBlur3780" inkspace:collect="always" stdDeviation="4.2" />
-    </filter>
-  </defs>
-  <title>blockdiag</title>
-  <desc>nwdiag {
-  inet [shape = cloud];
-  inet -- router;
-
-  network cluster {
-    router;
-
-    address = "210.x.x.x/24"
-
-    node-01 [address = "210.x.x.1"];
-    node-02 [address = "210.x.x.2"];
-    node-03 [address = "210.x.x.2"];
-  }
-}
-</desc>
-  <path d="M 171 178 A16,8 0 0 1 187 170 A16,6 0 0 1 227 170 A16,8 0 0 1 243 178 A16,8 0 0 1 243 194 A16,20 0 0 1 219 194 A16,20 0 0 1 195 194 A16,20 0 0 1 171 194 A16,8 0 0 1 171 178" fill="rgb(0,0,0)" stroke="rgb(0,0,0)" style="filter:url(#filter_blur);opacity:0.7;fill-opacity:1" />
-  <rect fill="rgb(0,0,0)" height="40" stroke="rgb(0,0,0)" style="filter:url(#filter_blur);opacity:0.7;fill-opacity:1" width="104" x="155" y="306" />
-  <rect fill="rgb(0,0,0)" height="40" stroke="rgb(0,0,0)" style="filter:url(#filter_blur);opacity:0.7;fill-opacity:1" width="104" x="307" y="450" />
-  <rect fill="rgb(0,0,0)" height="40" stroke="rgb(0,0,0)" style="filter:url(#filter_blur);opacity:0.7;fill-opacity:1" width="104" x="459" y="450" />
-  <rect fill="rgb(0,0,0)" height="40" stroke="rgb(0,0,0)" style="filter:url(#filter_blur);opacity:0.7;fill-opacity:1" width="104" x="611" y="450" />
-  <path d="M 131 391 L 739 391 A2,4 0 0 1 739 399 L 131 399 A2,4 0 0 1 131 391" fill="rgb(0,0,0)" style="filter:url(#filter_blur)" />
-  <path d="M 128 388 L 736 388 A2,4 0 0 1 736 396 L 128 396 A2,4 0 0 1 128 388" fill="rgb(185,203,228)" stroke="rgb(0,0,0)" />
-  <path d="M 736 396 A2,4 0 0 1 736 388" fill="none" stroke="rgb(0,0,0)" />
-  <path d="M 128 388 L 736 388" fill="none" stroke="none" />
-  <text fill="rgb(0,0,0)" font-family="sansserif" font-size="11" font-style="normal" font-weight="normal" text-anchor="middle" textLength="42" x="99" y="391">cluster</text>
-  <text fill="rgb(0,0,0)" font-family="sansserif" font-size="11" font-style="normal" font-weight="normal" text-anchor="middle" textLength="72" x="84" y="404">210.x.x.x/24</text>
-  <path d="M 204 104 L 204 156" fill="none" stroke="rgb(0,0,0)" />
-  <path d="M 204 196 L 204 248" fill="none" stroke="rgb(0,0,0)" />
-  <path d="M 168 172 A16,8 0 0 1 184 164 A16,6 0 0 1 224 164 A16,8 0 0 1 240 172 A16,8 0 0 1 240 188 A16,20 0 0 1 216 188 A16,20 0 0 1 192 188 A16,20 0 0 1 168 188 A16,8 0 0 1 168 172" fill="rgb(255,255,255)" stroke="rgb(0,0,0)" />
-  <text fill="rgb(0,0,0)" font-family="sansserif" font-size="11" font-style="normal" font-weight="normal" text-anchor="middle" textLength="24" x="204" y="182">inet</text>
-  <path d="M 204 248 L 204 300" fill="none" stroke="rgb(0,0,0)" />
-  <path d="M 204 340 L 204 388" fill="none" stroke="rgb(0,0,0)" />
-  <rect fill="rgb(255,255,255)" height="40" stroke="rgb(0,0,0)" width="104" x="152" y="300" />
-  <text fill="rgb(0,0,0)" font-family="sansserif" font-size="11" font-style="normal" font-weight="normal" text-anchor="middle" textLength="36" x="204" y="326">router</text>
-  <path d="M 356 396 L 356 444" fill="none" stroke="rgb(0,0,0)" />
-  <text fill="rgb(0,0,0)" font-family="sansserif" font-size="11" font-style="normal" font-weight="normal" text-anchor="middle" textLength="54" x="395" y="424">210.x.x.1</text>
-  <rect fill="rgb(255,255,255)" height="40" stroke="rgb(0,0,0)" width="104" x="304" y="444" />
-  <text fill="rgb(0,0,0)" font-family="sansserif" font-size="11" font-style="normal" font-weight="normal" text-anchor="middle" textLength="42" x="356" y="470">node-01</text>
-  <path d="M 508 396 L 508 444" fill="none" stroke="rgb(0,0,0)" />
-  <text fill="rgb(0,0,0)" font-family="sansserif" font-size="11" font-style="normal" font-weight="normal" text-anchor="middle" textLength="54" x="547" y="424">210.x.x.2</text>
-  <rect fill="rgb(255,255,255)" height="40" stroke="rgb(0,0,0)" width="104" x="456" y="444" />
-  <text fill="rgb(0,0,0)" font-family="sansserif" font-size="11" font-style="normal" font-weight="normal" text-anchor="middle" textLength="42" x="508" y="470">node-02</text>
-  <path d="M 660 396 L 660 444" fill="none" stroke="rgb(0,0,0)" />
-  <text fill="rgb(0,0,0)" font-family="sansserif" font-size="11" font-style="normal" font-weight="normal" text-anchor="middle" textLength="54" x="699" y="424">210.x.x.2</text>
-  <rect fill="rgb(255,255,255)" height="40" stroke="rgb(0,0,0)" width="104" x="608" y="444" />
-  <text fill="rgb(0,0,0)" font-family="sansserif" font-size="11" font-style="normal" font-weight="normal" text-anchor="middle" textLength="42" x="660" y="470">node-03</text>
-</svg>
diff --git a/images/cluster.nwdiag b/images/cluster.nwdiag
deleted file mode 100644
index f7c5485..0000000
--- a/images/cluster.nwdiag
+++ /dev/null
@@ -1,14 +0,0 @@
-nwdiag {
-  inet [shape = cloud];
-  inet -- router;
-
-  network cluster {
-    router;
-
-    address = "210.x.x.x/24"
-
-    node-01 [address = "210.x.x.1"];
-    node-02 [address = "210.x.x.2"];
-    node-03 [address = "210.x.x.2"];
-  }
-}
diff --git a/images/node-nwdiag.svg b/images/node-nwdiag.svg
deleted file mode 100644
index d09bd86..0000000
--- a/images/node-nwdiag.svg
+++ /dev/null
@@ -1,64 +0,0 @@
-<?xml version='1.0' encoding='UTF-8'?>
-<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.0//EN" "http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd">
-<svg viewBox="0 0 760 444" xmlns="http://www.w3.org/2000/svg" xmlns:inkspace="http://www.inkscape.org/namespaces/inkscape" xmlns:xlink="http://www.w3.org/1999/xlink">
-  <defs id="defs_block">
-    <filter height="1.504" id="filter_blur" inkspace:collect="always" width="1.1575" x="-0.07875" y="-0.252">
-      <feGaussianBlur id="feGaussianBlur3780" inkspace:collect="always" stdDeviation="4.2" />
-    </filter>
-  </defs>
-  <title>blockdiag</title>
-  <desc>nwdiag {
-  network cluster {
-    address = "210.x.x.x/24"
-    eth0;
-  }
-  network vmbr0 {
-        address = "210.x.x.1"
-         eth0;
-         VM-100 [ address = "210.x.x.10"];
-	 VM-101 [ address = "210.x.x.11"];
-	 CT-200 [ address = "210.x.x.12"];
-         group node-01 {
-	   eth0;
-	   VM-100;
-	   VM-101;
-	   CT-200;
-	 }
-     }
- }
-</desc>
-  <rect fill="rgb(243,152,0)" height="236" style="filter:url(#filter_blur)" width="572" x="146" y="130" />
-  <rect fill="rgb(0,0,0)" height="40" stroke="rgb(0,0,0)" style="filter:url(#filter_blur);opacity:0.7;fill-opacity:1" width="104" x="155" y="162" />
-  <rect fill="rgb(0,0,0)" height="40" stroke="rgb(0,0,0)" style="filter:url(#filter_blur);opacity:0.7;fill-opacity:1" width="104" x="307" y="306" />
-  <rect fill="rgb(0,0,0)" height="40" stroke="rgb(0,0,0)" style="filter:url(#filter_blur);opacity:0.7;fill-opacity:1" width="104" x="459" y="306" />
-  <rect fill="rgb(0,0,0)" height="40" stroke="rgb(0,0,0)" style="filter:url(#filter_blur);opacity:0.7;fill-opacity:1" width="104" x="611" y="306" />
-  <path d="M 131 103 L 283 103 A2,4 0 0 1 283 111 L 131 111 A2,4 0 0 1 131 103" fill="rgb(0,0,0)" style="filter:url(#filter_blur)" />
-  <path d="M 131 247 L 739 247 A2,4 0 0 1 739 255 L 131 255 A2,4 0 0 1 131 247" fill="rgb(0,0,0)" style="filter:url(#filter_blur)" />
-  <path d="M 128 100 L 280 100 A2,4 0 0 1 280 108 L 128 108 A2,4 0 0 1 128 100" fill="rgb(185,203,228)" stroke="rgb(0,0,0)" />
-  <path d="M 280 108 A2,4 0 0 1 280 100" fill="none" stroke="rgb(0,0,0)" />
-  <path d="M 128 100 L 280 100" fill="none" stroke="none" />
-  <path d="M 204 35 L 204 100" fill="none" stroke="rgb(0,0,0)" />
-  <path d="M 128 244 L 736 244 A2,4 0 0 1 736 252 L 128 252 A2,4 0 0 1 128 244" fill="rgb(185,203,228)" stroke="rgb(0,0,0)" />
-  <path d="M 736 252 A2,4 0 0 1 736 244" fill="none" stroke="rgb(0,0,0)" />
-  <path d="M 128 244 L 736 244" fill="none" stroke="none" />
-  <text fill="rgb(0,0,0)" font-family="sansserif" font-size="11" font-style="normal" font-weight="normal" text-anchor="middle" textLength="42" x="99" y="103">cluster</text>
-  <text fill="rgb(0,0,0)" font-family="sansserif" font-size="11" font-style="normal" font-weight="normal" text-anchor="middle" textLength="72" x="84" y="116">210.x.x.x/24</text>
-  <text fill="rgb(0,0,0)" font-family="sansserif" font-size="11" font-style="normal" font-weight="normal" text-anchor="middle" textLength="30" x="105" y="247">vmbr0</text>
-  <text fill="rgb(0,0,0)" font-family="sansserif" font-size="11" font-style="normal" font-weight="normal" text-anchor="middle" textLength="54" x="93" y="260">210.x.x.1</text>
-  <path d="M 204 108 L 204 156" fill="none" stroke="rgb(0,0,0)" />
-  <path d="M 204 196 L 204 244" fill="none" stroke="rgb(0,0,0)" />
-  <rect fill="rgb(255,255,255)" height="40" stroke="rgb(0,0,0)" width="104" x="152" y="156" />
-  <text fill="rgb(0,0,0)" font-family="sansserif" font-size="11" font-style="normal" font-weight="normal" text-anchor="middle" textLength="24" x="204" y="182">eth0</text>
-  <path d="M 356 252 L 356 300" fill="none" stroke="rgb(0,0,0)" />
-  <text fill="rgb(0,0,0)" font-family="sansserif" font-size="11" font-style="normal" font-weight="normal" text-anchor="middle" textLength="60" x="398" y="280">210.x.x.10</text>
-  <rect fill="rgb(255,255,255)" height="40" stroke="rgb(0,0,0)" width="104" x="304" y="300" />
-  <text fill="rgb(0,0,0)" font-family="sansserif" font-size="11" font-style="normal" font-weight="normal" text-anchor="middle" textLength="36" x="356" y="326">VM-100</text>
-  <path d="M 508 252 L 508 300" fill="none" stroke="rgb(0,0,0)" />
-  <text fill="rgb(0,0,0)" font-family="sansserif" font-size="11" font-style="normal" font-weight="normal" text-anchor="middle" textLength="60" x="550" y="280">210.x.x.11</text>
-  <rect fill="rgb(255,255,255)" height="40" stroke="rgb(0,0,0)" width="104" x="456" y="300" />
-  <text fill="rgb(0,0,0)" font-family="sansserif" font-size="11" font-style="normal" font-weight="normal" text-anchor="middle" textLength="36" x="508" y="326">VM-101</text>
-  <path d="M 660 252 L 660 300" fill="none" stroke="rgb(0,0,0)" />
-  <text fill="rgb(0,0,0)" font-family="sansserif" font-size="11" font-style="normal" font-weight="normal" text-anchor="middle" textLength="60" x="702" y="280">210.x.x.12</text>
-  <rect fill="rgb(255,255,255)" height="40" stroke="rgb(0,0,0)" width="104" x="608" y="300" />
-  <text fill="rgb(0,0,0)" font-family="sansserif" font-size="11" font-style="normal" font-weight="normal" text-anchor="middle" textLength="36" x="660" y="326">CT-200</text>
-</svg>
diff --git a/images/node.nwdiag b/images/node.nwdiag
deleted file mode 100644
index 28e1f6a..0000000
--- a/images/node.nwdiag
+++ /dev/null
@@ -1,19 +0,0 @@
-nwdiag {
-  network cluster {
-    address = "210.x.x.x/24"
-    eth0;
-  }
-  network vmbr0 {
-        address = "210.x.x.1"
-         eth0;
-         VM-100 [ address = "210.x.x.10"];
-	 VM-101 [ address = "210.x.x.11"];
-	 CT-200 [ address = "210.x.x.12"];
-         group node-01 {
-	   eth0;
-	   VM-100;
-	   VM-101;
-	   CT-200;
-	 }
-     }
- }