yes, all logging configs can be customized in $OPENHAB_USERDATA/etc/org.ops4j.pax.logging.cfg file
see here also: Log4j2 Sample Config
edit: by the way: you can decrease the overall log level of the org.openhab.binding.network from INFO to WARN to get rid of these entries (instead of filtering out the Running arping... from all the INFO entries)