AdguardTeam/AdGuardHome · error

unknown ipset

Error message

unknown ipset %q

What it means

A config line references an ipset name that is not present in the map of sets currently known on the system (built from the initial list query and earlier processing).

Solutions

1. Create the ipset before starting: 'ipset create <name> hash:ip'
2. Check exact spelling/case against 'ipset list' output
3. Persist sets so they survive reboots/firewall restarts

Example fix

# before
# config references adguard-block but set missing
# after
ipset create adguard-block hash:ip family inet timeout 0

func setExists(name string) bool {
	out, _ := exec.Command("ipset", "list", name).CombinedOutput()
	return !bytes.Contains(out, []byte("doesn't exist")) && len(out) > 0
}

if err != nil && strings.Contains(err.Error(), "unknown ipset") {
	_ = exec.Command("ipset", "create", name, "hash:ip").Run()
	// retry init
}

When it happens

Trigger: m.ipsets looks up names[i] in currentlyKnown and misses: set not created, typo, or race where the set was destroyed between listing and lookup.

Common situations: Forgetting 'ipset create' before starting the service, name case/spelling mismatch, or sets wiped by firewall reload.

Understand the failure class

Background: 'Could not be found', 'does not exist', 'not found in database': the resource-not-found family when an ID, slug, key, or URI lookup comes back empty — this error's family across 20 libraries.

Related errors

• getting ipsets from config line at idx
• config line at idx
• getting ipsets
• invalid value : empty ipset name
• invalid value : expected one slash

AI-assisted analysis of AdguardTeam/AdGuardHome@b41aefbe51 (2026-08-27). Data as JSON: /api/errors/c87a3405710e913a. Report an issue: GitHub.

Appendix: source

Thrown at internal/ipset/ipset_linux.go:343

	return props{
		name:         name,
		typeName:     typeName,
		family:       family,
		isPersistent: false,
	}, nil
}

// ipsets returns ipset properties of currently known ipsets.  It also makes an
// additional ipset header data query if needed.
func (m *manager) ipsets(
	ctx context.Context,
	names []string,
	currentlyKnown map[string]props,
) (sets []props, err error) {
	for _, n := range names {
		p, ok := currentlyKnown[n]
		if !ok {
			return nil, fmt.Errorf("unknown ipset %q", n)
		}

		if p.family != netfilter.ProtoIPv4 && p.family != netfilter.ProtoIPv6 {
			m.logger.DebugContext(
				ctx,
				"got unexpected ipset family while getting set properties",
				"set_name", p.name,
				"set_type", p.typeName,
				"set_family", p.family,
			)

			p, err = m.ipsetProps(n)
			if err != nil {
				return nil, fmt.Errorf("%q %q making header query: %w", p.name, p.typeName, err)
			}
		}

		m.nameToIpset[n] = p

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