tag:
type: txt
help: Set to apply filtering to an interface
allowed: ${vyatta_sbindir}/vyatta-interfaces.pl --show all
syntax:expression: exec "\
    if [ -z \"`ip addr | grep $VAR(@) `\" ]; then \
      echo ethernet interface $VAR(@) doesn\\'t exist on this system ; \
      exit 1 ;                                                      \
    fi ; "
