diff --git a/doc/INSTALL.md b/doc/INSTALL.md
index a8a2a3d..f008e6d 100644
--- a/doc/INSTALL.md
+++ b/doc/INSTALL.md
@@ -25,6 +25,7 @@ configuration file, set `USELIBCONFIG=` in the Makefile.
 If you want to rebuild `sslh-conf.c` (after a `make
 distclean` for example), you will also need to add
 [conf2struct](https://www.rutschle.net/tech/conf2struct/README.html)
+(commit 10ea3356b65e712fb000f4d37f00e1dc09c1e722)
 to your path.
 
 Compilation
diff --git a/doc/tproxy.svg b/doc/tproxy.svg
index 8b7c01c..6e83e59 100644
--- a/doc/tproxy.svg
+++ b/doc/tproxy.svg
@@ -15,8 +15,8 @@
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    version="1.1"
    id="svg288"
-   inkscape:version="0.92.4 (5da689c313, 2019-01-14)"
-   sodipodi:docname="Transparent Proxy to Two Hosts - Diagram.svg">
+   inkscape:version="0.92.1 r15371"
+   sodipodi:docname="tproxy.svg">
   <defs
      id="defs282">
     <linearGradient
@@ -44,16 +44,16 @@
      inkscape:pageopacity="0.0"
      inkscape:pageshadow="2"
      inkscape:zoom="1.01"
-     inkscape:cx="511.12411"
-     inkscape:cy="388.13656"
+     inkscape:cx="388.35183"
+     inkscape:cy="384.17616"
      inkscape:document-units="mm"
      inkscape:current-layer="layer1"
      showgrid="false"
      inkscape:snap-page="true"
-     inkscape:window-width="1920"
-     inkscape:window-height="1005"
-     inkscape:window-x="-9"
-     inkscape:window-y="-9"
+     inkscape:window-width="1600"
+     inkscape:window-height="836"
+     inkscape:window-x="0"
+     inkscape:window-y="27"
      inkscape:window-maximized="1"
      showguides="false" />
   <metadata
@@ -324,19 +324,7 @@
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          y="148.08023"
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-    <flowRoot
-       xml:space="preserve"
-       id="flowRoot5149"
-       style="font-style:normal;font-weight:normal;font-size:40px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none"
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-         id="flowPara5155"
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+    <text
        xml:space="preserve"
        style="font-style:normal;font-weight:normal;font-size:3.52777767px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.26458332"
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@@ -598,5 +586,40 @@
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+         style="font-style:normal;font-variant:normal;font-weight:bold;font-stretch:normal;font-size:14.66666698px;font-family:'Courier New';-inkscape-font-specification:'Courier New Bold';fill:#009600;fill-opacity:1">ssh</flowPara></flowRoot>    <flowRoot
+       xml:space="preserve"
+       id="flowRoot5149"
+       style="font-style:normal;font-weight:normal;font-size:40px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none"
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+           id="rect5153"
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+       xml:space="preserve"
+       id="flowRoot5149-3"
+       style="font-style:normal;font-weight:normal;font-size:40px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none"
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+       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:2.82222223px;line-height:1.25;font-family:STIX;-inkscape-font-specification:STIX;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.26458332"
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+         id="tspan158"
+         x="187.04207"
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 </svg>