diff --git a/impl/setup_tundev.sh b/impl/setup_tundev.sh
index 59f8a2b..d16ac01 100755
--- a/impl/setup_tundev.sh
+++ b/impl/setup_tundev.sh
@@ -14,5 +14,6 @@ HOSTID="$1"
 DEV=hamnet70
 
 sudo ip tuntap add dev $DEV mode tun user $(whoami)
+sudo ip link set dev $DEV txqueuelen 16  # default is 500
 sudo ip link set dev $DEV up
 sudo ip address add dev $DEV fd73::$HOSTID/64