diff --git a/.circleci/config.yml b/.circleci/config.yml
index 2966d7017a..5a8df94cc6 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -64,7 +64,6 @@ jobs:
             - ./packages/core-vote-report/node_modules
             - ./packages/core-webhooks/node_modules
             - ./packages/crypto/node_modules
-            - ./packages/utils/node_modules
             - ./node_modules
       - run:
           name: Create .ark/database directory
@@ -78,8 +77,8 @@ jobs:
             ./packages/core-json-rpc/ ./packages/core-http-utils/
             ./packages/core-event-emitter/ ./packages/core-elasticsearch/
             ./packages/core-database-postgres/ ./packages/core-config/
-            ./packages/core-interfaces/ --detectOpenHandles --runInBand
-            --forceExit --ci --coverage | tee test_output.txt
+            ./packages/core/ --detectOpenHandles --runInBand --forceExit --ci
+            --coverage | tee test_output.txt
       - run:
           name: Last 1000 lines of test output
           when: on_fail
@@ -151,7 +150,6 @@ jobs:
             - ./packages/core-vote-report/node_modules
             - ./packages/core-webhooks/node_modules
             - ./packages/crypto/node_modules
-            - ./packages/utils/node_modules
             - ./node_modules
       - run:
           name: Create .ark/database directory
@@ -162,10 +160,11 @@ jobs:
             ./node_modules/.bin/cross-env ARK_ENV=test ./node_modules/.bin/jest
             ./packages/crypto/ ./packages/core-utils/
             ./packages/core-tester-cli/ ./packages/core-snapshots/
-            ./packages/core-logger/ ./packages/core-api/ ./packages/core-forger/
-            ./packages/core-error-tracker-bugsnag/ ./packages/core-debugger-cli/
-            ./packages/core-container/ ./packages/core/ --detectOpenHandles
-            --runInBand --forceExit --ci --coverage | tee test_output.txt
+            ./packages/core-logger/ ./packages/core-interfaces/
+            ./packages/core-forger/ ./packages/core-error-tracker-bugsnag/
+            ./packages/core-debugger-cli/ ./packages/core-container/
+            ./packages/core-api/ --detectOpenHandles --runInBand --forceExit
+            --ci --coverage | tee test_output.txt
       - run:
           name: Last 1000 lines of test output
           when: on_fail
@@ -237,7 +236,6 @@ jobs:
             - ./packages/core-vote-report/node_modules
             - ./packages/core-webhooks/node_modules
             - ./packages/crypto/node_modules
-            - ./packages/utils/node_modules
             - ./node_modules
       - run:
           name: Create .ark/database directory
@@ -246,13 +244,13 @@ jobs:
           name: Test
           command: >
             ./node_modules/.bin/cross-env ARK_ENV=test ./node_modules/.bin/jest
-            ./packages/utils/ ./packages/core-vote-report/
-            ./packages/core-transaction-pool/ ./packages/core-snapshots-cli/
-            ./packages/core-logger-winston/ ./packages/core-jest-matchers/
-            ./packages/core-graphql/ ./packages/core-error-tracker-sentry/
-            ./packages/core-deployer/ ./packages/core-database/
-            ./packages/core-blockchain/ --detectOpenHandles --runInBand
-            --forceExit --ci --coverage | tee test_output.txt
+            ./packages/core-vote-report/ ./packages/core-transaction-pool/
+            ./packages/core-snapshots-cli/ ./packages/core-logger-winston/
+            ./packages/core-jest-matchers/ ./packages/core-graphql/
+            ./packages/core-error-tracker-sentry/ ./packages/core-deployer/
+            ./packages/core-database/ ./packages/core-blockchain/
+            --detectOpenHandles --runInBand --forceExit --ci --coverage | tee
+            test_output.txt
       - run:
           name: Last 1000 lines of test output
           when: on_fail
diff --git a/packages/core-blockchain/lib/blockchain.js b/packages/core-blockchain/lib/blockchain.js
index 4f824ef1e2..880e7916ae 100644
--- a/packages/core-blockchain/lib/blockchain.js
+++ b/packages/core-blockchain/lib/blockchain.js
@@ -512,6 +512,10 @@ module.exports = class Blockchain {
       logger.debug(
         `Block ${block.data.height.toLocaleString()} just received :chains:`,
       )
+    } else if (block.data.timestamp < lastBlock.data.timestamp) {
+      logger.debug(
+        `Block ${block.data.height.toLocaleString()} disregarded because it has a lower timestamp than the last block :bangbang:`
+      )
     } else {
       const isValid = await this.database.validateForkedBlock(block)
 
diff --git a/packages/core-p2p/__tests__/utils/is-myself.test.js b/packages/core-p2p/__tests__/utils/is-myself.test.js
index cc9e941dab..873aa9d8f9 100644
--- a/packages/core-p2p/__tests__/utils/is-myself.test.js
+++ b/packages/core-p2p/__tests__/utils/is-myself.test.js
@@ -12,6 +12,10 @@ describe('isMyself', () => {
     expect(isMyself('192.167.22.1')).toBeFalse()
   })
 
+  it('should be ok for non-quad-dotted localhost addresses', () => {
+    expect(isMyself('2130706433')).toBeTrue()
+  })
+
   it('should be ok for LAN addresses', () => {
     const interfaces = os.networkInterfaces()
     const addresses = []
diff --git a/packages/core-p2p/lib/utils/is-myself.js b/packages/core-p2p/lib/utils/is-myself.js
index c60d6c975b..45ca858fa4 100644
--- a/packages/core-p2p/lib/utils/is-myself.js
+++ b/packages/core-p2p/lib/utils/is-myself.js
@@ -1,6 +1,7 @@
 /* eslint max-len: "off" */
 
 const os = require('os')
+const ip = require("ipaddr.js")
 
 /**
  * Checks if IP belongs to local computer (all network interfaces are checked)
@@ -10,6 +11,12 @@ const os = require('os')
 module.exports = ipAddress => {
   const interfaces = os.networkInterfaces()
 
+  try {
+    ipAddress = ip.parse(ipAddress).toString();
+  } catch (error) {
+    return true;
+  }
+
   return (
     ipAddress.startsWith('127.') ||
     ipAddress.startsWith('0.') ||
diff --git a/packages/core/package.json b/packages/core/package.json
index e5472986d6..4ae27796bd 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@arkecosystem/core",
   "description": "Core of the Ark Blockchain",
-  "version": "2.0.18",
+  "version": "2.0.19",
   "contributors": [
     "François-Xavier Thoorens <fx@ark.io>",
     "Kristjan Košič <kristjan@ark.io>",