#5801 ipa-server-install: error: option --forwarder: invalid IP address 127.0.0.11: cannot use loopback IP address when using Docker embedded DNS server
Closed: fixed a year ago Opened 2 years ago by adelton.

Docker 1.10 introduced embedded DNS server.

From https://docs.docker.com/engine/userguide/networking/dockernetworks/#docker-embedded-dns-server:

Docker daemon runs an embedded DNS server to provide automatic service discovery for containers connected to user defined networks. Name resolution requests from the containers are handled first by the embedded DNS server. If the embedded DNS server is unable to resolve the request it will be forwarded to any external DNS servers configured for the container. To facilitate this when the container is created, only the embedded DNS server reachable at 127.0.0.11 will be listed in the container’s resolv.conf file.

Therefore, 127.0.0.11 sounds perfect for {{{--forwarder}}} settings if the IPA server in container is supposed to be able to resolve hostnames outside of the container environments. However, attempt to use

ipa-server-install [...] --forwarder=127.0.0.11

in the container results in

ipa-server-install: error: option --forwarder: invalid IP address 127.0.0.11: cannot use loopback IP address

Oh yes, we should issue warning and let the user proceed.

4.4.0 was released, moving open tickets to 4.4.1

Moving to next major version. Fixing this bug is not critical in stabilization release.

Metadata Update from @adelton:
- Issue assigned to mbasti
- Issue set to the milestone: FreeIPA 4.5

2 years ago

Metadata Update from @mbasti:
- Issue close_status updated to: None
- Issue set to the milestone: FreeIPA 4.5.1 (was: FreeIPA 4.5)

2 years ago

Metadata Update from @mbasti:
- Issue set to the milestone: FreeIPA 4.5.2 (was: FreeIPA 4.5.1)

2 years ago

FreeIPA 4.5.1 has been released, moving to FreeIPA 4.5.2 milestone

Metadata Update from @tkrizek:
- Issue set to the milestone: FreeIPA 4.5.3 (was: FreeIPA 4.5.2)

2 years ago

Metadata Update from @fbarreto:
- Issue assigned to fbarreto (was: mbasti)

2 years ago

Metadata Update from @tkrizek:
- Issue set to the milestone: FreeIPA 4.5.4 (was: FreeIPA 4.5.3)

2 years ago

Metadata Update from @pvoborni:
- Issue tagged with: containers

2 years ago

Metadata Update from @tkrizek:
- Issue set to the milestone: FreeIPA 4.5.5 (was: FreeIPA 4.5.4)

a year ago

master:

  • 405da07 Warning the user when using a loopback IP as forwarder

ipa-4-6:

  • 29e1f26 Warning the user when using a loopback IP as forwarder

ipa-4-5:

  • 2f99d61 Warning the user when using a loopback IP as forwarder

Metadata Update from @cheimes:
- Issue close_status updated to: fixed
- Issue status updated to: Closed (was: Open)

a year ago

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