diff --git a/go.mod b/go.mod
index 6c104b09..398504cb 100644
--- a/go.mod
+++ b/go.mod
@@ -3,7 +3,7 @@ module github.com/yggdrasil-network/yggdrasil-go
 go 1.16
 
 require (
-	github.com/Arceliar/ironwood v0.0.0-20210613152842-297306b677cc
+	github.com/Arceliar/ironwood v0.0.0-20210619124114-6ad55cae5031
 	github.com/Arceliar/phony v0.0.0-20210209235338-dde1a8dca979
 	github.com/VividCortex/ewma v1.2.0 // indirect
 	github.com/cheggaaa/pb/v3 v3.0.8
diff --git a/go.sum b/go.sum
index 84c2fad4..5d11fad6 100644
--- a/go.sum
+++ b/go.sum
@@ -1,5 +1,5 @@
-github.com/Arceliar/ironwood v0.0.0-20210613152842-297306b677cc h1:0eUsfi0FBobUVaBJEcC5x2/Y7Geq7Mpvx51rWmZN7NU=
-github.com/Arceliar/ironwood v0.0.0-20210613152842-297306b677cc/go.mod h1:RP72rucOFm5udrnEzTmIWLRVGQiV/fSUAQXJ0RST/nk=
+github.com/Arceliar/ironwood v0.0.0-20210619124114-6ad55cae5031 h1:DZVDfYhVdu+0wAiRHoY1olyNkKxIot9UjBnbQFzuUlM=
+github.com/Arceliar/ironwood v0.0.0-20210619124114-6ad55cae5031/go.mod h1:RP72rucOFm5udrnEzTmIWLRVGQiV/fSUAQXJ0RST/nk=
 github.com/Arceliar/phony v0.0.0-20210209235338-dde1a8dca979 h1:WndgpSW13S32VLQ3ugUxx2EnnWmgba1kCqPkd4Gk1yQ=
 github.com/Arceliar/phony v0.0.0-20210209235338-dde1a8dca979/go.mod h1:6Lkn+/zJilRMsKmbmG1RPoamiArC6HS73xbwRyp3UyI=
 github.com/VividCortex/ewma v1.1.1/go.mod h1:2Tkkvm3sRDVXaiyucHiACn4cqf7DpdyLvmxzcbUokwA=
diff --git a/src/core/keystore.go b/src/core/keystore.go
index 82fa9317..5062a675 100644
--- a/src/core/keystore.go
+++ b/src/core/keystore.go
@@ -40,7 +40,7 @@ type keyInfo struct {
 }
 
 type buffer struct {
-	packets [][]byte
+	packet  []byte
 	timeout *time.Timer
 }
 
@@ -73,7 +73,7 @@ func (k *keyStore) sendToAddress(addr address.Address, bs []byte) {
 			k.addrBuffer[addr] = buf
 		}
 		msg := append([]byte(nil), bs...)
-		buf.packets = append(buf.packets, msg)
+		buf.packet = msg
 		if buf.timeout != nil {
 			buf.timeout.Stop()
 		}
@@ -102,7 +102,7 @@ func (k *keyStore) sendToSubnet(subnet address.Subnet, bs []byte) {
 			k.subnetBuffer[subnet] = buf
 		}
 		msg := append([]byte(nil), bs...)
-		buf.packets = append(buf.packets, msg)
+		buf.packet = msg
 		if buf.timeout != nil {
 			buf.timeout.Stop()
 		}
@@ -134,15 +134,11 @@ func (k *keyStore) update(key ed25519.PublicKey) *keyInfo {
 		k.resetTimeout(info)
 		k.mutex.Unlock()
 		if buf := k.addrBuffer[info.address]; buf != nil {
-			for _, bs := range buf.packets {
-				_, _ = k.core.pc.WriteTo(bs, iwt.Addr(info.key[:]))
-			}
+			k.core.pc.WriteTo(buf.packet, iwt.Addr(info.key[:]))
 			delete(k.addrBuffer, info.address)
 		}
 		if buf := k.subnetBuffer[info.subnet]; buf != nil {
-			for _, bs := range buf.packets {
-				_, _ = k.core.pc.WriteTo(bs, iwt.Addr(info.key[:]))
-			}
+			k.core.pc.WriteTo(buf.packet, iwt.Addr(info.key[:]))
 			delete(k.subnetBuffer, info.subnet)
 		}
 	} else {