Test all nics using mtr (my traceroute)

mtr.sh

#!/bin/bash

mtrv4() {
    [[ -z ${1} || ${1} =~ -h ]] && {
        printf "Usage: %s <hostname|IP>\n" "${FUNCNAME[0]}" 1>&2
        return 2
    }
    for i in $(ip -o -4 a | awk '{if ($2 != "lo") print $2}' | paste -sd' '); do mtr -4 -rw -c 5 -I "${i}" "${1}"; done
}
export -f mtrv4

mtrv6() {
    [[ -z "$1" || "$1" =~ -h ]] && {
        printf "Usage: %s <hostname|IP>\n" "${FUNCNAME[0]}" 1>&2
        return 2
    }
    for i in $(ip -o -6 a | awk '{if ($2 != "lo") print $2}' | paste -sd' '); do mtr -6 -rw -c 5 -I "${i}" "${1}"; done
}
export -f mtrv6