vethwep-cleanup.sh

#!/bin/bash

# workaround for https://github.com/weaveworks/weave/issues/3406

ip a | grep 'vethwepl.*\@' -oP | while read -r line ; do
    veth=${line::-1}
    if [[ $veth =~ [0-9] ]]; then
        echo checking $veth
        pid=$(echo $veth | tr -dc '0-9')
        if ! ps -p $pid > /dev/null; then
            true
            echo deleting $veth
            ip link delete $veth >&2
        else
            echo $veth keeping
        fi
    else
        echo $veth veth has no number in it and will not be deleted
    fi
done