On Fedora 32 host Docker / moby-engine fails with an IPv6 related error message:
$ docker run ... freeipa-server
systemd v245.6-2.fc32 running in system mode. (+PAM +AUDIT +SELINUX +IMA -APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ +LZ4 +SECCOMP +BLKID +ELFUTILS +KMOD +IDN2 -IDN +PCRE2 default-hierarchy=unified)
Detected virtualization container-other.
Detected architecture x86-64.
Set hostname to <ipa.example.test>.
IPv6 stack is enabled in the kernel but there is no interface that has ::1 address assigned. Add ::1 address resolution to 'lo' interface. You might need to enable IPv6 on the interface 'lo' in sysctl.conf.
The ipa-server-install command failed. See /var/log/ipaserver-install.log for more information
Tue Aug 4 13:25:49 UTC 2020 /usr/sbin/ipa-server-configure-first
On Fedora 32 host Docker / moby-engine fails with an IPv6 related error message:
Workaround: https://docs.docker.com/config/daemon/ipv6/
/etc/docker/daemon.json
to enable IPv6 supportsystemctl restart docker