diff --git a/.cirrus.yml b/.cirrus.yml
index 174e2498..1a1470be 100644
--- a/.cirrus.yml
+++ b/.cirrus.yml
@@ -1,8 +1,7 @@
 task:
   freebsd_instance:
     matrix:
-      #image: freebsd-11-2-release-amd64
-      image: freebsd-12-0-release-amd64
+      image: freebsd-12-1-release-amd64
   pip_cache:
     folder: ~/.cache/pip
     fingerprint_script: cat requirements*
@@ -15,6 +14,11 @@ task:
     zpool create -m "/.ioc-test-`uname -r`" "ioc-test-`uname -r`" "/pools/ioc-test-`uname -r`.img"
     zfs set compression=lz4 "ioc-test-`uname -r`"
   install_script:
+    - uname -a
+    - uname -KU
+    - kldstat
+    - sysrc -a
+    - sysctl -a
     - mount -t fdescfs null /dev/fd
     - pkg install -y git
     - make install-dev
diff --git a/.travis.yml b/.travis.yml
index df24de67..3606e167 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,6 @@
 language: python
 python:
-  - "3.6"
+  - "3.7"
 sudo: false
 env:
   - MYPYPATH="$TRAVIS_BUILD_DIR/.travis/mypy-stubs"
diff --git a/.travis/mypy-stubs/libzfs.pyi b/.travis/mypy-stubs/libzfs.pyi
index 30c69bfc..fbde1514 100644
--- a/.travis/mypy-stubs/libzfs.pyi
+++ b/.travis/mypy-stubs/libzfs.pyi
@@ -77,7 +77,12 @@ class ZFS:
     pools: Generator[ZFSPool, None, None] = ...
     snapshots: Generator[ZFSSnapshot, None, None] = ...
     __pyx_vtable__ = ... # type: Any
-    def __init__(self, history: bool=True, history_prefix: str='') -> None: ...
+    def __init__(
+        self,
+	history: bool=True,
+	history_prefix: str='',
+	mnttab_cache: bool=True
+    ) -> None: ...
     def create(
         self,
         name: str,
diff --git a/Makefile b/Makefile
index d4e97c94..4e64abd2 100644
--- a/Makefile
+++ b/Makefile
@@ -3,8 +3,11 @@ JAIL_NIC?=vtnet0
 JAIL_IP?=172.16.0
 JAIL_NET?=16
 MYPYPATH = $(shell pwd)/.travis/mypy-stubs
-PYTHON ?= python3.6
 
+PYTHON_VERSION ?= $(TRAVIS_PYTHON_VERSION)
+SELECTED_PYTHON_VERSION != if [ "$(PYTHON_VERSION)" != "" ]; then echo $(PYTHON_VERSION); else pkg info -g 'python3*' | cut -d'-' -f1 | sed 's/^python//' | sort -n | tail -n1 | sed -r 's/^([0-9])([0-9]+)/\1.\2/'; fi
+PYTHON ?= python${SELECTED_PYTHON_VERSION}
+# turn python3.7 -> 3.7 -> 37
 pyver= ${PYTHON:S/^python//:S/.//:C/\([0-9]+\)/\1/}
 
 .if $(pyver) < 35
@@ -19,13 +22,13 @@ install-python-requirements:
 install-python-requirements-dev: install-python-requirements
 	$(PYTHON) -m pip install -Ur requirements-dev.txt
 install-deps:
-	pkg install -q -y libucl py$(pyver)-ucl py$(pyver)-cython rsync python$(pyver) py$(pyver)-libzfs
+	pkg install -q -y libucl py$(pyver)-ucl py$(pyver)-setuptools rsync python$(pyver) py$(pyver)-libzfs
 install-deps-dev: install-deps
-	if [ "`uname`" = "FreeBSD" ]; then pkg install -y gmake py36-sqlite3; fi
+	if [ "`uname`" = "FreeBSD" ]; then pkg install -y gmake py$(pyver)-sqlite3; fi
 install-dev: install-deps-dev install-python-requirements-dev
 	$(PYTHON) -m pip install -e .
 install-travis:
-	python3.6 -m pip install -IU flake8-mutable flake8-docstrings flake8-builtins flake8-mypy bandit==1.5.1 bandit-high-entropy-string
+	python$(TRAVIS_PYTHON_VERSION) -m pip install -IU flake8-mutable flake8-docstrings flake8-builtins flake8-mypy bandit==1.5.1 bandit-high-entropy-string
 uninstall:
 	$(PYTHON) -m pip uninstall -y ioc
 	@if [ -f /usr/local/etc/rc.d/ioc ]; then \
@@ -33,6 +36,7 @@ uninstall:
 	fi
 check:
 	flake8 --version
+	mypy --version
 	flake8 --exclude=".travis,.eggs,__init__.py,docs,tests" --ignore=E203,E252,W391,D107,A001,A002,A003,A004,D412,D413,T499
 	bandit --skip B404,B110 --exclude tests/ -r .
 test:
diff --git a/README.md b/README.md
index 53be4137..6f227ed2 100644
--- a/README.md
+++ b/README.md
@@ -15,11 +15,17 @@ cd libioc
 make install
 ```
 
-At the current time libiocage is not packaged or available in FreeBSD ports.
+The default Python version is 3.7. If you intend to run libioc from another version, please specify it during the installation:
+
+```sh
+make PYTHON=python3.8 install
+```
+
+At the current time libioc is not packaged or available in FreeBSD ports.
 
 ## Documentation
 
-- Iocage Handbook: https://bsdci.github.io/handbook
+- Ioc Handbook: https://bsdci.github.io/handbook
 - Reference Documentation: https://bsdci.github.io/libioc
 - Gitter Chat: https://gitter.im/libioc/community
 
diff --git a/libioc/Pkg.py b/libioc/Pkg.py
index 9d795a0a..2135e6ec 100644
--- a/libioc/Pkg.py
+++ b/libioc/Pkg.py
@@ -144,7 +144,8 @@ def _update_host_repo(self, release_major_version: int) -> None:
             logger=self.logger,
             env=dict(
                 ABI=self.__get_abi_string(release_major_version),
-                SIGNATURE_TYPE="fingerprints"
+                SIGNATURE_TYPE="fingerprints",
+                IGNORE_OSVERSION="yes"
             )
         )
 
diff --git a/libioc/ZFS.py b/libioc/ZFS.py
index 59ebd8cf..449a5c6c 100644
--- a/libioc/ZFS.py
+++ b/libioc/ZFS.py
@@ -280,7 +280,11 @@ def get_zfs(
     history_prefix: str="<iocage>"
 ) -> ZFS:
     """Get an instance of iocages enhanced ZFS class."""
-    zfs = ZFS(history=history, history_prefix=history_prefix)
+    zfs = ZFS(
+        history=history,
+        history_prefix=history_prefix,
+        mnttab_cache=False
+    )
     zfs.logger = libioc.helpers_object.init_logger(zfs, logger)
     return zfs
 
diff --git a/libioc/helpers_ioctl.py b/libioc/helpers_ioctl.py
index 528042f1..b739a079 100644
--- a/libioc/helpers_ioctl.py
+++ b/libioc/helpers_ioctl.py
@@ -41,7 +41,12 @@ def get_sockio_ioctl(nic_name: str, ioctl: SOCKIO_IOCTLS) -> bytes:
     """Query a sockio ioctl for a given NIC."""
     with socket.socket(socket.AF_INET, socket.SOCK_DGRAM, 0) as sock:
         ifconf = struct.pack('256s', nic_name.encode("UTF-8")[:15])
-        return bytes(fcntl.ioctl(sock.fileno(), ioctl.value, ifconf))
+        return bytes(fcntl.ioctl(
+            sock.fileno(),
+            int(ioctl.value),
+            bytes(ifconf),
+            True
+        ))
 
 
 def get_interface_ip4_address(nic_name: str) -> ipaddress.IPv4Address:
diff --git a/requirements.txt b/requirements.txt
index f853105f..73992402 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,3 @@
 gitpython
-freebsd_sysctl==0.0.6
-jail==0.0.8
+freebsd_sysctl==0.0.7
+jail==0.0.11
diff --git a/setup.cfg b/setup.cfg
index 57b59a67..f7fa6d93 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -2,7 +2,7 @@
 description-file = README.md
 
 [mypy]
-python_version = 3.6
+python_version = 3.7
 # override flake8-mypy defaults, since we provide (missing) types
 platform='freebsd'
 
diff --git a/tests/test_Jail.py b/tests/test_Jail.py
index 11ff4796..487297e9 100644
--- a/tests/test_Jail.py
+++ b/tests/test_Jail.py
@@ -87,7 +87,7 @@ def test_can_be_started(
         assert existing_jail.running is True
 
         stdout = subprocess.check_output(
-            [f"/sbin/mount | grep {existing_jail.root_dataset.name}"],
+            [f"/sbin/mount | grep {existing_jail.root_dataset.mountpoint}"],
             shell=True
         ).decode("utf-8")
 
@@ -104,7 +104,7 @@ def test_can_mount_devfs(
 
         existing_jail.start()
         stdout = subprocess.check_output(
-            [f"/sbin/mount | grep {existing_jail.root_dataset.name}"],
+            [f"/sbin/mount | grep {existing_jail.root_dataset.mountpoint}"],
             shell=True
         ).decode("utf-8")
         assert "/dev" in stdout
@@ -112,7 +112,7 @@ def test_can_mount_devfs(
 
         existing_jail.stop()
         stdout = subprocess.check_output(
-            [f"/sbin/mount | grep {existing_jail.root_dataset.name}"],
+            [f"/sbin/mount | grep {existing_jail.root_dataset.mountpoint}"],
             shell=True
         ).decode("utf-8")
         assert "/dev" not in stdout
@@ -128,7 +128,7 @@ def test_can_mount_fdescfs(
 
         existing_jail.start()
         stdout = subprocess.check_output(
-            [f"/sbin/mount | grep {existing_jail.root_dataset.name}"],
+            [f"/sbin/mount | grep {existing_jail.root_dataset.mountpoint}"],
             shell=True
         ).decode("utf-8")
         assert "/dev/fd" in stdout
@@ -136,7 +136,7 @@ def test_can_mount_fdescfs(
 
         existing_jail.stop()
         stdout = subprocess.check_output(
-            [f"/sbin/mount | grep {existing_jail.root_dataset.name}"],
+            [f"/sbin/mount | grep {existing_jail.root_dataset.mountpoint}"],
             shell=True
         ).decode("utf-8")
         assert "/dev/fd" not in stdout
@@ -152,7 +152,7 @@ def test_can_mount_devfs_and_fdescfs(
 
         existing_jail.start()
         stdout = subprocess.check_output(
-            [f"/sbin/mount | grep {existing_jail.root_dataset.name}"],
+            [f"/sbin/mount | grep {existing_jail.root_dataset.mountpoint}"],
             shell=True
         ).decode("utf-8")
         assert "/dev (" in stdout
@@ -160,7 +160,7 @@ def test_can_mount_devfs_and_fdescfs(
 
         existing_jail.stop()
         stdout = subprocess.check_output(
-            [f"/sbin/mount | grep {existing_jail.root_dataset.name}"],
+            [f"/sbin/mount | grep {existing_jail.root_dataset.mountpoint}"],
             shell=True
         ).decode("utf-8")
         assert "/dev (" not in stdout
@@ -242,9 +242,9 @@ def test_can_be_started(
         existing_jail.start()
         assert existing_jail.running is True
 
-        root_path = existing_jail.root_dataset.name
+        root_path = existing_jail.root_dataset.mountpoint
         stdout = subprocess.check_output(
-            [f"/sbin/mount | grep {existing_jail.root_dataset.name}"],
+            [f"/sbin/mount | grep {existing_jail.root_dataset.mountpoint}"],
             shell=True
         ).decode("utf-8")
         assert "launch-scripts in stdout"
@@ -268,7 +268,7 @@ def test_can_be_stopped(
                 [f"/usr/sbin/jls", "-j", existing_jail.identifier]
             ).decode("utf-8")
 
-        root_path = existing_jail.root_dataset.name
+        root_path = existing_jail.root_dataset.mountpoint
         stdout = subprocess.check_output(
             [f"/sbin/mount | grep {root_path}"],
             shell=True
diff --git a/tests/test_VNET.py b/tests/test_VNET.py
index ca13b7b9..bf2f7f4b 100644
--- a/tests/test_VNET.py
+++ b/tests/test_VNET.py
@@ -22,6 +22,7 @@
 # IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 # POSSIBILITY OF SUCH DAMAGE.
 """Unit tests for VNET."""
+import pytest
 import json
 import os
 import subprocess
@@ -31,6 +32,21 @@
 
 import libioc.Jail
 
+
+def is_epair_enabled() -> bool:
+    proc = subprocess.Popen(
+        ["/sbin/kldstat", "-n", "if_epair"],
+        stdout=subprocess.DEVNULL,
+        stderr=subprocess.DEVNULL
+    )
+    proc.communicate()
+    return (proc.returncode == 0)
+
+
+@pytest.mark.skipif(
+    (is_epair_enabled() is False),
+    reason="if_epair is not loaded"
+)
 class TestVNET(object):
     """Run tests for VNET networking."""