def network_undefine(name, **kwargs):
    '''
    Remove a defined virtual network. This does not stop the virtual network.

    :param name: virtual network name
    :param connection: libvirt connection URI, overriding defaults
    :param username: username to connect with, overriding defaults
    :param password: password to connect with, overriding defaults

    .. versionadded:: 2019.2.0

    CLI Example:

    .. code-block:: bash

        salt '*' virt.network_undefine default
    '''
    conn = __get_conn(**kwargs)
    try:
        net = conn.networkLookupByName(name)
        return not bool(net.undefine())
    finally:
        conn.close()