If you have configured in Asterisk (or you fron-end FreePBX) sip trunk provider of VoIP, but outbound link is not working, and in output:# asterisk -rx "sip show peers"you see that your sip trunk UNREACHABLE in the
"ERROR: Failed to load nf_conntrack module: modprobe: ERROR: could not find module by name='nf_conntrack'..." was exactly the error I had after the upgrade to firewalld-0.6.3-2.el7_7.1.noarch.You should check if the downgrade w