grafana/k6 · error

error parsing blacklist-ip '%s': %w

Error message

error parsing blacklist-ip '%s': %w

What it means

Error "error parsing blacklist-ip '%s': %w" thrown in grafana/k6.

Source

Thrown at internal/cmd/options.go:164

		opts.ExecutionSegmentSequence = segmentSequence
	}

	if flags.Changed("system-tags") {
		systemTagList, err := flags.GetStringSlice("system-tags")
		if err != nil {
			return opts, err
		}
		opts.SystemTags = metrics.ToSystemTagSet(systemTagList)
	}

	blacklistIPStrings, err := flags.GetStringSlice("blacklist-ip")
	if err != nil {
		return opts, err
	}
	for _, s := range blacklistIPStrings {
		net, parseErr := lib.ParseCIDR(s)
		if parseErr != nil {
			return opts, fmt.Errorf("error parsing blacklist-ip '%s': %w", s, parseErr)
		}
		opts.BlacklistIPs = append(opts.BlacklistIPs, net)
	}

	blockedHostnameStrings, err := flags.GetStringSlice("block-hostnames")
	if err != nil {
		return opts, err
	}
	if flags.Changed("block-hostnames") {
		opts.BlockedHostnames, err = types.NewNullHostnameTrie(blockedHostnameStrings)
		if err != nil {
			return opts, err
		}
	}

	localIpsString, err := flags.GetString("local-ips")
	if err != nil {
		return opts, err

View on GitHub (pinned to 93accf6570)

When it happens

Trigger: Thrown at internal/cmd/options.go:164 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of grafana/k6@93accf6570 (2026-08-15). Data as JSON: /api/errors/13c5443c031006b7. Report an issue: GitHub.