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Description of problem:
hash:mac does not allow family parameter.
ipset(8):This parameter is valid for the create command of all hash type sets except for hash:mac.
Firewalld permits it's configuration while it should not.
Version-Release number of selected component (if applicable):
firewalld-0.4.4.4-14.el7.noarch
ipset-6.29-1.el7.x86_64
kernel-4.14.0-29.el7a.x86_64
How reproducible:
always
Steps to Reproduce:
firewall-cmd --permanent --new-ipset hashmac --type hash:mac
success
firewall-cmd --permanent --new-ipset hashmacv6 --type hash:mac --family inet6
success
Actual results:
both ipsets are defined, but inet6 is not supported in ipset/(kernel?)
2018-02-01 11:04:52 ERROR: Failed to load ipset file '/etc/firewalld/ipsets/hashmacv6.xml': INVALID_OPTION: Unsupported option 'family' for type 'hash:mac'
Expected results:
failure on invalid family specification for hash:mac ipset type
Additional info:
the issue is not the (hidden) error, which is asynchronous to the --permanent+new, but the ability to create a configuration which is inevitably broken, successfully.
Unlike in firewall-offline-cmd, there's runtime which should be able to assess the configuration from environmental/other point of view.
there can be cases in which the assessment might not be possible, but not in this one. For others e.g. kernel refusing to accept a rule due to unknown constraints.
Currently firewalld only checks "ipset --help" output to guess if an ipset type is supported. This should be improved by attempting to create an ipset to verify the kernel actually supports the type.
See class ipset, method supported_types().
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory (firewalld bug fix and enhancement update), and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://access.redhat.com/errata/RHBA-2020:4461