diff --git a/Lib/ipaddress.py b/Lib/ipaddress.py
index 15507d61dec8f9..8a42bf2a56ce6f 100644
--- a/Lib/ipaddress.py
+++ b/Lib/ipaddress.py
@@ -1287,7 +1287,7 @@ def __init__(self, address):
             return
 
         # Constructing from a packed address
-        if isinstance(address, bytes):
+        if isinstance(address, (bytes, bytearray)):
             self._check_packed_address(address, 4)
             self._ip = int.from_bytes(address, 'big')
             return
diff --git a/Misc/NEWS.d/next/Library/2018-08-25-02-38-50.bpo-34465.pMad01.rst b/Misc/NEWS.d/next/Library/2018-08-25-02-38-50.bpo-34465.pMad01.rst
new file mode 100644
index 00000000000000..79b18df1e6b2d0
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2018-08-25-02-38-50.bpo-34465.pMad01.rst
@@ -0,0 +1 @@
+Added support for 'bytearray' type in creating a new IPv4 address.
\ No newline at end of file