diff --git a/start.sh b/start.sh
index 90f00ad..0136f8e 100755
--- a/start.sh
+++ b/start.sh
@@ -62,9 +62,8 @@ for i in 1 2 3 4; do
     tmux send-keys -t ns$i "ip link set vde0 up" Enter
     tmux send-keys -t ns$i "ip address add 10.2.1.2/30 dev vde0" Enter
     tmux send-keys -t ns$i "ip address add 2a0c:700:3012:3::ff:1/127 dev vde0" Enter
-    tmux send-keys -t ns$i "ip route add 0.0.0.0/1 via 10.2.1.1 dev vde0 proto kernel" Enter
-    tmux send-keys -t ns$i "ip route add 128.0.0.0/1 via 10.2.1.1 dev vde0 proto kernel" Enter
-    tmux send-keys -t ns$i "ip -6 route add 2000::/4 via 2a0c:700:3012:3::ff:0 dev vde0 proto kernel" Enter
+    tmux send-keys -t ns$i "ip route add default via 10.2.1.1 dev vde0 proto kernel" Enter
+    tmux send-keys -t ns$i "ip -6 route add default via 2a0c:700:3012:3::ff:0 dev vde0 proto kernel" Enter
     tmux send-keys -t ns$i "echo \"interface vde0 type wired\" >> /tmp/ns$i/babeld.conf" Enter
     tmux send-keys -t ns$i "echo \"redistribute metric 256\" >> /tmp/ns$i/babeld.conf" Enter
   fi