Check if address is a valid IP. returns True if valid, otherwise False.

    CLI Example:

    .. code-block:: bash

        salt ns1 dig.check_ip 127.0.0.1
        salt ns1 dig.check_ip 1111:2222:3333:4444:5555:6666:7777:8888

def check_ip(addr):
    '''
    Check if address is a valid IP. returns True if valid, otherwise False.

    CLI Example:

    .. code-block:: bash

        salt ns1 dig.check_ip 127.0.0.1
        salt ns1 dig.check_ip 1111:2222:3333:4444:5555:6666:7777:8888
    '''

    try:
        addr = addr.rsplit('/', 1)
    except AttributeError:
        # Non-string passed
        return False

    if salt.utils.network.is_ipv4(addr[0]):
        try:
            if 1 <= int(addr[1]) <= 32:
                return True
        except ValueError:
            # Non-int subnet notation
            return False
        except IndexError:
            # No subnet notation used (i.e. just an IPv4 address)
            return True

    if salt.utils.network.is_ipv6(addr[0]):
        try:
            if 8 <= int(addr[1]) <= 128:
                return True
        except ValueError:
            # Non-int subnet notation
            return False
        except IndexError:
            # No subnet notation used (i.e. just an IPv4 address)
            return True

    return False