+ @staticmethod
+ def setup_network_namespace(node, namespace_name, interface_name,
+ ip_address, prefix):
+ """Setup namespace on given node and attach interface and IP to
+ this namespace. Applicable also on TG node.
+
+ :param node: Node to set namespace on.
+ :param namespace_name: Namespace name.
+ :param interface_name: Interface name.
+ :param ip_address: IP address of namespace's interface.
+ :param prefix: IP address prefix length.
+ :type node: dict
+ :type namespace_name: str
+ :type vhost_if: str
+ :type ip_address: str
+ :type prefix: int
+
+ """
+ cmd = ('ip netns add {0}'.format(namespace_name))
+ exec_cmd_no_error(node, cmd, sudo=True)
+
+ cmd = ('ip link set dev {0} up netns {1}'.format(interface_name,
+ namespace_name))
+ exec_cmd_no_error(node, cmd, sudo=True)
+
+ cmd = ('ip netns exec {0} ip addr add {1}/{2} dev {3}'.format(
+ namespace_name, ip_address, prefix, interface_name))
+ exec_cmd_no_error(node, cmd, sudo=True)
+