diff --git a/imgs/Git-Logo-1788C.eps b/imgs/Git-Logo-1788C.eps
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diff --git a/slides.tex b/slides.tex
index 82a8973..de8ac26 100644
--- a/slides.tex
+++ b/slides.tex
@@ -30,7 +30,7 @@ routing protocol}
     \href{https://datatracker.ietf.org/doc/draft-bastian-babel-v4ov6/}{
 draft-bastian-babel-v4ov6}}
 \author[\slidecountline]
-{Théophile Bastian, Juliusz Chroboczek}
+{Théophile Bastian, joint work with Juliusz Chroboczek}
 \date{}
 %\subject{}
 %\logo{}
@@ -44,29 +44,30 @@ draft-bastian-babel-v4ov6}}
 \maketitle{}
 
 \begin{frame}{Traditional routing}
-    \begin{align*}
-        \text{Network prefix (IPvX)} \quad &\longrightarrow
-        \quad \text{Next-Hop (IPvX)}
-    \end{align*}
-
-    \pause{}
-
     \begin{table}
         \centering
         \textbf{IPv4 routing table} \\
         \medskip
         \begin{tabular}{@{} lcl @{}}
             \toprule
-            Prefix & $\rightarrow$ & Next-Hop \\
+            Network Prefix (IPvX) & $\rightarrow$ & Next-Hop (IPvX)\\
             \midrule
             default & & 10.42.0.254 \\
             10.102.0.0/16 & & 10.102.0.1 \\
-            10.102.10.0/24 & & 10.102.10.1 \\
-            \only<3>{10.0.0.0/8 & & % \makebox[0pt]{\color{red}---}
-            \xcancel{fd80:1::1}} \\
+            10.102.0.0/24 & & 10.102.0.2 \\
+            10.0.0.0/8 & & \xcancel{fd80:1::1} \\
             \bottomrule
         \end{tabular}
     \end{table}
+
+    \vspace{1em}
+
+    \begin{itemize}
+        \item \textbf{Control plan:} \alert{babel}, routing protocol.
+            \alert{Fills the routing table}.
+        \item \textbf{Data plan:} correctly forward incoming packets.
+            \alert{Uses the routing table}.
+    \end{itemize}
 \end{frame}
 
 \begin{frame}{The router's job}
@@ -76,7 +77,7 @@ draft-bastian-babel-v4ov6}}
     \end{figure}
 \end{frame}
 
-\begin{frame}{What's under the hull?}
+\begin{frame}{What's under the hood?}
     \begin{figure}
         \centering
         \only<1>{\includegraphics[width=\columnwidth]{imgs/_autogen/mac/01.pdf}}
@@ -93,7 +94,12 @@ draft-bastian-babel-v4ov6}}
     \end{figure}
 \end{frame}
 
-\begin{frame}{Why would we want this?}
+\begin{frame}{The idea behind}
+    \textbf{New type of route!} v4 prefix with v6 next-hop: \alert{v4-over-v6
+    route}.
+
+    \vspace{2em}
+
     \begin{itemize}
         \item Supporting both v4 and v6 is cumbersome: twice the configuration
         \item v6-only core, still serve v4 to clients
@@ -103,15 +109,27 @@ draft-bastian-babel-v4ov6}}
                 \item no need for DHCP or IP addresses configuration \emph{at all}!
             \end{itemize}
     \end{itemize}
+
+    \vspace{2em}
+
+    \textbf{Not an original idea!} BGP had it first:
+    \href{https://datatracker.ietf.org/doc/draft-ietf-bess-rfc5549revision/}{draft-ietf-bess-rfc5549revision}
 \end{frame}
 
-\begin{frame}[fragile]{Supported in Linux since 5.2 --~July 2019}
-    \begin{block}{d1566268 -- 2019-04-05 -- ipv4: Allow ipv6 gateway with ipv4 routes}
-        \quad{}Add support for \lstbash{RTA_VIA} and allow an IPv6 nexthop for v4
-        routes.
-    \end{block}
+\begin{frame}[fragile]{Linux support}
+    \textbf{Supported in Linux} since 5.2 --~July 2019!
 
-    \vspace{1em}
+    \begin{minipage}[c]{0.1\textwidth}
+        \includegraphics[height=1.2em]{imgs/Git-Logo-1788C}
+    \end{minipage}
+    \begin{minipage}[c]{0.85\textwidth}
+            \begin{block}{d1566268 -- 2019-04-05 -- ipv4: Allow ipv6 gateway with ipv4 routes}
+                \quad{}Add support for \lstbash{RTA_VIA} and allow an IPv6 nexthop for v4
+                routes.
+            \end{block}
+    \end{minipage}
+
+    \vspace{2em}
 
     \begin{itemize}
         \item{} Usually, add a v4 route with
@@ -141,6 +159,17 @@ draft-bastian-babel-v4ov6}}
     \end{itemize}
 \end{frame}
 
+\begin{frame}{Backwards compatibility}
+    \textbf{An unextended node must}
+
+    \begin{itemize}
+        \item Be able to \alert{ignore v4-over-v6 routes}
+        \item \alert{Route correctly} pure v4 and v6
+    \end{itemize}
+
+    \todo{Choices considered}
+\end{frame}
+
 \begin{frame}{Introducing a new AE}
     In Babel, \alert{Address Encodings} (AEs) define the type of address/prefix
     contained in a TLV.
@@ -157,23 +186,6 @@ draft-bastian-babel-v4ov6}}
     introduced.
 \end{frame}
 
-\begin{frame}{Backwards compatibility}
-    \textbf{With older implementations}
-    \begin{itemize}
-        \item Ignore v4-over-v6 routes
-        \item No state updates missed
-    \end{itemize}
-
-    \vspace{2em}
-
-    \textbf{With older kernels}
-    \begin{itemize}
-        \item Won't advertise a route that cannot be locally set
-        \item In babeld, detect kernel version
-    \end{itemize}
-\end{frame}
-
-
 %%%%%%%%%%% Conclusion frame %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
 \begin{frame}{}