I want to draw '->' for each path.
Actually I tried to add every node option and '->', but this doesn't work.
I know that \draw[->] (t1)--(t2); \draw[->] (t2)--(t3); ... would be work.
But I want to know simple solution.
Is there any simple solution?

\begin{figure} \begin{tikzpicture}[auto, block/.style = {rectangle, draw}]
\matrix[every node/.style = block, column sep=4mm, row sep=6mm]{
\node (t1) {host}; & & \node (t11) {host}; \\
\node (t2) {ICMP}; & & \node (t10) {ICMP}; \\
\node (t3) {ICMP}; & & \node (t9) {ICMP}; \\
\node (t4) {host}; & & \node (t8) {host}; \\
\node (t5) {ICMP}; & \node (t6) {dd}; & \node (t7) {ICMP}; \\
};
\path[draw, every node, ->] (t1)--(t2)--(t3)->(t4)->(t5)->(t6)->(t7)->(t8)->(t9)->(t10);
\end{tikzpicture} \end{figure}
