# v1.6.1

## Package Downloads <a href="#package-downloads" id="package-downloads"></a>

### RPM <a href="#rpm" id="rpm"></a>

Cypress Packages

* [kcnd-v1.6.1-0.el7.x86\_64.rpm](https://packages.klaytn.net/klaytn/v1.6.1/kcnd-v1.6.1-0.el7.x86_64.rpm)
* [kpnd-v1.6.1-0.el7.x86\_64.rpm](https://packages.klaytn.net/klaytn/v1.6.1/kpnd-v1.6.1-0.el7.x86_64.rpm)
* [kend-v1.6.1-0.el7.x86\_64.rpm](https://packages.klaytn.net/klaytn/v1.6.1/kend-v1.6.1-0.el7.x86_64.rpm)

Baobab Packages

* [kcnd-baobab-v1.6.1-0.el7.x86\_64.rpm](https://packages.klaytn.net/klaytn/v1.6.1/kcnd-baobab-v1.6.1-0.el7.x86_64.rpm)
* [kpnd-baobab-v1.6.1-0.el7.x86\_64.rpm](https://packages.klaytn.net/klaytn/v1.6.1/kpnd-baobab-v1.6.1-0.el7.x86_64.rpm)
* [kend-baobab-v1.6.1-0.el7.x86\_64.rpm](https://packages.klaytn.net/klaytn/v1.6.1/kend-baobab-v1.6.1-0.el7.x86_64.rpm)

Common Packages

* [kscnd-v1.6.1-0.el7.x86\_64.rpm](https://packages.klaytn.net/klaytn/v1.6.1/kscnd-v1.6.1-0.el7.x86_64.rpm)
* [kspnd-v1.6.1-0.el7.x86\_64.rpm](https://packages.klaytn.net/klaytn/v1.6.1/kspnd-v1.6.1-0.el7.x86_64.rpm)
* [ksend-v1.6.1-0.el7.x86\_64.rpm](https://packages.klaytn.net/klaytn/v1.6.1/ksend-v1.6.1-0.el7.x86_64.rpm)
* [kbnd-v1.6.1-0.el7.x86\_64.rpm](https://packages.klaytn.net/klaytn/v1.6.1/kbnd-v1.6.1-0.el7.x86_64.rpm)
* [kgen-v1.6.1-0.el7.x86\_64.rpm](https://packages.klaytn.net/klaytn/v1.6.1/kgen-v1.6.1-0.el7.x86_64.rpm)
* [homi-v1.6.1-0.el7.x86\_64.rpm](https://packages.klaytn.net/klaytn/v1.6.1/homi-v1.6.1-0.el7.x86_64.rpm)

### Linux <a href="#linux" id="linux"></a>

Cypress Packages

* [kcn-v1.6.1-0-linux-amd64.tar.gz](https://packages.klaytn.net/klaytn/v1.6.1/kcn-v1.6.1-0-linux-amd64.tar.gz)
* [kpn-v1.6.1-0-linux-amd64.tar.gz](https://packages.klaytn.net/klaytn/v1.6.1/kpn-v1.6.1-0-linux-amd64.tar.gz)
* [ken-v1.6.1-0-linux-amd64.tar.gz](https://packages.klaytn.net/klaytn/v1.6.1/ken-v1.6.1-0-linux-amd64.tar.gz)

Baobab Packages

* [kcn-baobab-v1.6.1-0-linux-amd64.tar.gz](https://packages.klaytn.net/klaytn/v1.6.1/kcn-baobab-v1.6.1-0-linux-amd64.tar.gz)
* [kpn-baobab-v1.6.1-0-linux-amd64.tar.gz](https://packages.klaytn.net/klaytn/v1.6.1/kpn-baobab-v1.6.1-0-linux-amd64.tar.gz)
* [ken-baobab-v1.6.1-0-linux-amd64.tar.gz](https://packages.klaytn.net/klaytn/v1.6.1/ken-baobab-v1.6.1-0-linux-amd64.tar.gz)

Common Packages

* [kscn-v1.6.1-0-linux-amd64.tar.gz](https://packages.klaytn.net/klaytn/v1.6.1/kscn-v1.6.1-0-linux-amd64.tar.gz)
* [kspn-v1.6.1-0-linux-amd64.tar.gz](https://packages.klaytn.net/klaytn/v1.6.1/kspn-v1.6.1-0-linux-amd64.tar.gz)
* [ksen-v1.6.1-0-linux-amd64.tar.gz](https://packages.klaytn.net/klaytn/v1.6.1/ksen-v1.6.1-0-linux-amd64.tar.gz)
* [kbn-v1.6.1-0-linux-amd64.tar.gz](https://packages.klaytn.net/klaytn/v1.6.1/kbn-v1.6.1-0-linux-amd64.tar.gz)
* [kgen-v1.6.1-0-linux-amd64.tar.gz](https://packages.klaytn.net/klaytn/v1.6.1/kgen-v1.6.1-0-linux-amd64.tar.gz)
* [homi-v1.6.1-0-linux-amd64.tar.gz](https://packages.klaytn.net/klaytn/v1.6.1/homi-v1.6.1-0-linux-amd64.tar.gz)

### MacOS <a href="#macos" id="macos"></a>

Cypress Packages

* [kcn-v1.6.1-0-darwin-10.10-amd64.tar.gz](https://packages.klaytn.net/klaytn/v1.6.1/kcn-v1.6.1-0-darwin-10.10-amd64.tar.gz)
* [kpn-v1.6.1-0-darwin-10.10-amd64.tar.gz](https://packages.klaytn.net/klaytn/v1.6.1/kpn-v1.6.1-0-darwin-10.10-amd64.tar.gz)
* [ken-v1.6.1-0-darwin-10.10-amd64.tar.gz](https://packages.klaytn.net/klaytn/v1.6.1/ken-v1.6.1-0-darwin-10.10-amd64.tar.gz)

Baobab Packages

* [kcn-baobab-v1.6.1-0-darwin-10.10-amd64.tar.gz](https://packages.klaytn.net/klaytn/v1.6.1/kcn-baobab-v1.6.1-0-darwin-10.10-amd64.tar.gz)
* [kpn-baobab-v1.6.1-0-darwin-10.10-amd64.tar.gz](https://packages.klaytn.net/klaytn/v1.6.1/kpn-baobab-v1.6.1-0-darwin-10.10-amd64.tar.gz)
* [ken-baobab-v1.6.1-0-darwin-10.10-amd64.tar.gz](https://packages.klaytn.net/klaytn/v1.6.1/ken-baobab-v1.6.1-0-darwin-10.10-amd64.tar.gz)

Common Packages

* [kscn-v1.6.1-0-darwin-10.10-amd64.tar.gz](https://packages.klaytn.net/klaytn/v1.6.1/kscn-v1.6.1-0-darwin-10.10-amd64.tar.gz)
* [kspn-v1.6.1-0-darwin-10.10-amd64.tar.gz](https://packages.klaytn.net/klaytn/v1.6.1/kspn-v1.6.1-0-darwin-10.10-amd64.tar.gz)
* [ksen-v1.6.1-0-darwin-10.10-amd64.tar.gz](https://packages.klaytn.net/klaytn/v1.6.1/ksen-v1.6.1-0-darwin-10.10-amd64.tar.gz)
* [kbn-v1.6.1-0-darwin-10.10-amd64.tar.gz](https://packages.klaytn.net/klaytn/v1.6.1/kbn-v1.6.1-0-darwin-10.10-amd64.tar.gz)
* [kgen-v1.6.1-0-darwin-10.10-amd64.tar.gz](https://packages.klaytn.net/klaytn/v1.6.1/kgen-v1.6.1-0-darwin-10.10-amd64.tar.gz)
* [homi-v1.6.1-0-darwin-10.10-amd64.tar.gz](https://packages.klaytn.net/klaytn/v1.6.1/homi-v1.6.1-0-darwin-10.10-amd64.tar.gz)

### Windows <a href="#windows" id="windows"></a>

* Not supported yet

## Release Notes <a href="#release-notes" id="release-notes"></a>

### New Features

* Introduced execution deadline and max item limit for klay\_getLogs and klay\_getFilterLogs APIs (#903)
* Introduced a metric to record hashLocked status (#932)
* Added Staking Information API (governance.getStakingInfo) (#929)
* Introduced an option to limit concurrency limitation of HTTP-RPC server (rpc.concurrencylimit) (#922)

### Improvements

* Added a condition sending a COMMIT message for resolve hash lock issue (#888)
* Prefetch
  * Fixed the prefech logic for multiple txs of the same sender in a block (#911)
  * Enable TX prefetcher for multiple blocks (#916)
  * Move prefetcher execution as early as possible (#918)
  * Fixed the race condition of transaction access (#941)

### Fixes

* Fixed invalid validator list in extraData of block headers (#891)

### Miscellaneous

* Renamed an API, setMaxSubscriptionPerConn to setMaxSubscriptionPerWSConn (#897)
* Renamed hardfork name, Incompatible1 to IstanbulCompatible docs update needed (#901)