diff --git a/group.go b/group.go
index 5e40932..8db90fb 100644
--- a/group.go
+++ b/group.go
@@ -4,7 +4,9 @@ import (
 	"errors"
 	"fmt"
 	"github.com/nadoo/ipset"
+	"net"
 	"strconv"
+	"time"
 
 	"kvas2-go/models"
 	"kvas2-go/pkg/ip-helper"
@@ -22,6 +24,32 @@ type Group struct {
 	options   GroupOptions
 }
 
+func (g *Group) HandleIPv4(names []string, address net.IP, ttl time.Duration) error {
+	if !g.options.Enabled {
+		return nil
+	}
+
+DomainSearch:
+	for _, domain := range g.Domains {
+		if !domain.IsEnabled() {
+			continue
+		}
+		for _, name := range names {
+			if domain.IsMatch(name) {
+				// TODO: Looks like I need patch this module :\
+				//err := ipset.Add(g.ipsetName, address.String(), ipset.OptTimeout(uint32(ttl.Seconds())))
+				err := ipset.Add(g.ipsetName, address.String())
+				if err != nil {
+					return fmt.Errorf("failed to assign address %s with %s ipset", address, g.ipsetName)
+				}
+				break DomainSearch
+			}
+		}
+	}
+
+	return nil
+}
+
 func (g *Group) Enable() error {
 	if g.options.Enabled {
 		return nil
diff --git a/kvas2.go b/kvas2.go
index 1b77898..5e646f0 100644
--- a/kvas2.go
+++ b/kvas2.go
@@ -4,6 +4,7 @@ import (
 	"context"
 	"errors"
 	"fmt"
+	"log"
 	"net"
 	"sync"
 	"time"
@@ -158,17 +159,12 @@ func (a *App) processARecord(aRecord dnsProxy.Address) {
 
 	a.Records.PutARecord(aRecord.Name.String(), aRecord.Address, ttlDuration)
 
-	cNames := append([]string{aRecord.Name.String()}, a.Records.GetCNameRecords(aRecord.Name.String(), true, true)...)
+	names := append([]string{aRecord.Name.String()}, a.Records.GetCNameRecords(aRecord.Name.String(), true, true)...)
 	for _, group := range a.Groups {
-		for _, domain := range group.Domains {
-			if !domain.IsEnabled() {
-				continue
-			}
-			for _, cName := range cNames {
-				if domain.IsMatch(cName) {
-					fmt.Printf("Matched %s (%s) for %s in %s group!\n", cName, aRecord.Name, domain.Domain, group.Name)
-				}
-			}
+		err := group.HandleIPv4(names, aRecord.Address, ttlDuration)
+		if err != nil {
+			// TODO: Error log level
+			log.Printf("failed to handle address: %v", err)
 		}
 	}
 }