dotfiles/.scripts/findmtu.sh

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#!/bin/bash
destination_ip="${1:-1.1.1.1}"
# Set initial packet size
packet_size=1200
# Loop to find the maximum MTU size
while true; do
ping -4 -M do -c 1 -s $packet_size $destination_ip &> /dev/null
if [ $? -ne 0 ]; then
echo "Maximum MTU size: $((packet_size + 28 - 2))"
break
fi
packet_size=$((packet_size + 2))
done