## vim:ft=zsh
## check_ping - returns true if a host responds to ICMP echo requests
## Usage: check_ping [-6] <host>
typeset -i ipv6 ret

while [[ $1 == -* ]] {
	case $1 in
		-6) ipv6=1 ;;
	esac
	shift
}

typeset dst=$1
shift

if ((ipv6)) {
	ping6 -c 1 $dst &> /dev/null
} else {
	ping -c 1 $dst &> /dev/null
}
return