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Description of problem:
enabling masquerading using --add-masquerade and --add-rich-rule 'rule masquerade' leads to different results in both ipv4 and ipv6 netfilter rules.

Version-Release number of selected component (if applicable):
firewalld-0.4.3.2-6.el7.noarch

How reproducible:
always

Steps to Reproduce:
exclusively configure either or:
--add-masquerade
--add-rich-rule 'rule masquerade'

Actual results:
add-masquerade:
==ipv4:
-A POST_public_allow ! -o lo -j MASQUERADE
-A FWDO_public_allow -j ACCEPT
==ipv6:
!nothing

richrule:
==ipv4:
-A POST_public_allow ! -o lo -j MASQUERADE
-A FWDO_public_allow -m conntrack --ctstate NEW -j ACCEPT
==ipv6:
-A POST_public_allow ! -o lo -j MASQUERADE
-A FWDO_public_allow -m conntrack --ctstate NEW -j ACCEPT

Expected results:
both config variants enable masquerading the same way. especially ipv6 rules are either always added or never.

Additional info:

Created attachment 1198775 [details]
generated rulesets

normalized ruleset outputs for ipv4/ipv6 * all 3 variants basic of masquerading

Fixed upstream: https://github.com/t-woerner/firewalld/commit/e5a3fb14f6b3659037cebd2c2034626789f1d099

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, 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-2017:1934