AdguardTeam/AdGuardHome · error

config line at idx %d: %w

Error message

config line at idx %d: %w

What it means

Wraps a per-line parse failure with the index of the offending line in the ipset config. The inner error (382/383) explains the actual problem; this adds position context.

Source

Thrown at internal/ipset/ipset_linux.go:281

	// only the IPv4 one.
	//
	// TODO(a.garipov): Find out if this is a bug or a feature.
	all, err := m.ipv4Conn.listAll()
	if err != nil {
		// Don't wrap the error since it's informative enough as is.
		return err
	}

	currentlyKnown := map[string]props{}
	for _, p := range all {
		currentlyKnown[p.name] = p
	}

	for i, confStr := range ipsetConf {
		var hosts, ipsetNames []string
		hosts, ipsetNames, err = parseIpsetConfigLine(confStr)
		if err != nil {
			return fmt.Errorf("config line at idx %d: %w", i, err)
		}

		var ipsets []props
		ipsets, err = m.ipsets(ctx, ipsetNames, currentlyKnown)
		if err != nil {
			return fmt.Errorf("getting ipsets from config line at idx %d: %w", i, err)
		}

		for _, host := range hosts {
			m.domainToIpsets[host] = append(m.domainToIpsets[host], ipsets...)
		}
	}

	return nil
}

// ipsetProps returns the properties of an ipset with the given name.
//

View on GitHub (pinned to b41aefbe51)

Solutions

1. Look at the inner error and the Nth (0-based) entry of the ipset config lines array
2. Fix that line's host/name format or empty name
3. Restart/reload the service

if err != nil {
	var idx int
	if _, e := fmt.Sscanf(err.Error(), "config line at idx %d", &idx); e == nil {
		log.Printf("bad ipset config entry %d: %v", idx, errors.Unwrap(err))
	}
}

When it happens

Trigger: Any parseIpsetConfigLine error on ipsetConf[i] during newManagerWithDialer; the message includes 'config line at idx N'.

Common situations: Long ipset config lists where locating the bad line manually is tedious; error message pinpoints the index.

Related errors

• invalid value %q: expected one slash
• invalid value %q: empty ipset name
• getting ipsets from config line at idx %d: %w
• unknown ipset %q
• getting ipsets: %w

AI-assisted analysis of AdguardTeam/AdGuardHome@b41aefbe51 (2026-08-27). Data as JSON: /api/errors/3e056668be3c5922. Report an issue: GitHub.