diff --git a/kv/memberlist/dnsprovider.go b/kv/memberlist/dnsprovider.go
index b51a5d055..82e90b31b 100644
--- a/kv/memberlist/dnsprovider.go
+++ b/kv/memberlist/dnsprovider.go
@@ -2,6 +2,8 @@ package memberlist
 
 import (
 	"context"
+	"net"
+	"sync"
 )
 
 // DNSProvider supports storing or resolving a list of addresses.
@@ -13,3 +15,31 @@ type DNSProvider interface {
 	// Addresses returns the latest addresses present in the DNSProvider.
 	Addresses() []string
 }
+
+type dnsProvider struct {
+	sync.Mutex
+	addr []string
+}
+
+func NewDNSProvider() DNSProvider { return &dnsProvider{} }
+
+func (d *dnsProvider) Resolve(ctx context.Context, addrs []string) error {
+	d.Lock()
+	defer d.Unlock()
+	for _, a := range addrs {
+		ips, err := net.LookupIP(a)
+		if err != nil {
+			return err
+		}
+		for _, ip := range ips {
+			d.addr = append(d.addr, ip.String())
+		}
+	}
+	return nil
+}
+
+func (d *dnsProvider) Addresses() []string {
+	d.Lock()
+	defer d.Unlock()
+	return d.addr
+}
diff --git a/kv/memberlist/dnsprovider_test.go b/kv/memberlist/dnsprovider_test.go
new file mode 100644
index 000000000..30d08699d
--- /dev/null
+++ b/kv/memberlist/dnsprovider_test.go
@@ -0,0 +1,28 @@
+package memberlist
+
+import (
+	"context"
+	"testing"
+)
+
+func TestDNSProvider(t *testing.T) {
+	dns := &dnsProvider{}
+	if err := dns.Resolve(context.Background(), []string{"localhost"}); err != nil {
+		t.Fatal(err)
+	}
+	has127_0_0_1 := false
+	for _, addr := range dns.Addresses() {
+		if addr == "127.0.0.1" {
+			has127_0_0_1 = true
+		}
+	}
+	if !has127_0_0_1 {
+		t.Error("resolving localhost must result in 127.0.0.1 address", dns.Addresses())
+	}
+	if err := dns.Resolve(context.Background(), []string{"invalid dns"}); err == nil {
+		t.Error("resolving and invalid address must result in an error")
+	}
+	if len(dns.Addresses()) == 0 {
+		t.Error("DNSProvider must keep recent addresses on failure")
+	}
+}