diff --git a/preseed.cfg b/preseed.cfg
index 7843330..90e012c 100644
--- a/preseed.cfg
+++ b/preseed.cfg
@@ -113,13 +113,7 @@ d-i preseed/late_command string \
     in-target update-alternatives --set editor /usr/bin/vim.basic; \
     in-target sed -i -e 's/^\(PasswordAuthentication\).*/\1 yes/g' -e 's/^\(PermitRootLogin\).*/\1 yes/g' /etc/ssh/sshd_config; \
     in-target sed -i -e '/^GRUB_HIDDEN_TIMEOUT=/d' -e 's/^\(GRUB_HIDDEN_TIMEOUT_QUIET\)=true/\1=false/' /etc/default/grub; \
-    in-target cat <<EOF >/etc/rc.local
-    #!/bin/sh -e
-    #
-    # rc.local
-    dhclient -6 eth0
-    exit 0
-    EOF ;\
+    in-target cat "dhclient -6 eth0; exit 0" >>/etc/rc.local ;\
     in-target chmod +x /etc/rc.local; \
     in-target systemctl enable --now sshd; \
     in-target systemctl enable --now rc-local; \