ip_rule_add.sh

ip_rule_add () {
	if ip rule list | grep -Fq $1
	then
		ip rule list | grep -F $1 | awk -F\: -f <(cat - <<-'EOD'
			function ltrim(s) { sub(/^[ \t\r\n]+/, "", s); return s }
			function rtrim(s) { sub(/[ \t\r\n]+$/, "", s); return s }
			function trim(s)  { return rtrim(ltrim(s)); }
			BEGIN {}
			{
				rule = trim(trim($2));
				if (rule == "") {
					next;
				}

				split(rule, conditions, " ");
				if (conditions[2] == "all") {
					next;
				}

				print "ip rule del " $2
			}
			EOD
		) | bash
	fi
	if [ "$3" != "del" ]; then
		ip rule add from $1 table $2
	fi
}