add --ip6 flag to podman create/run

Add the --ipv6 flag to podman create/run and pod create. We support the
--network name:ip6=<ip> syntax now but for docker compat we should also
support the --ip6 flag.
Note that there is no validation if the ip is actually a v6 or v4 address
because the backend does not care either.

Fixes #7511

Signed-off-by: Paul Holzinger <pholzing@redhat.com>

3 files changed, 31 insertions, 12 deletions

diff --git a/docs/source/markdown/podman-create.1.md b/docs/source/markdown/podman-create.1.md
index 3d4b867d4..e3647b194 100644
--- a/docs/source/markdown/podman-create.1.md
+++ b/docs/source/markdown/podman-create.1.md
@@ -474,19 +474,24 @@ Path to the container-init binary.
 
 Keep STDIN open even if not attached. The default is *false*.
 
-#### **--ip6**=*ip*
+#### **--ip**=*ipv4*
 
-Not implemented
-
-#### **--ip**=*ip*
-
-Specify a static IP address for the container, for example **10.88.64.128**.
+Specify a static IPv4 address for the container, for example **10.88.64.128**.
 This option can only be used if the container is joined to only a single network - i.e., **--network=network-name** is used at most once -
 and if the container is not joining another container's network namespace via **--network=container:_id_**.
 The address must be within the network's IP address pool (default **10.88.0.0/16**).
 
 To specify multiple static IP addresses per container, set multiple networks using the **--network** option with a static IP address specified for each using the `ip` mode for that option.
 
+#### **--ip6**=*ipv6*
+
+Specify a static IPv6 address for the container, for example **fd46:db93:aa76:ac37::10**.
+This option can only be used if the container is joined to only a single network - i.e., **--network=network-name** is used at most once -
+and if the container is not joining another container's network namespace via **--network=container:_id_**.
+The address must be within the network's IPv6 address pool.
+
+To specify multiple static IPv6 addresses per container, set multiple networks using the **--network** option with a static IPv6 address specified for each using the `ip6` mode for that option.
+
 
 #### **--ipc**=*ipc*
 
diff --git a/docs/source/markdown/podman-pod-create.1.md b/docs/source/markdown/podman-pod-create.1.md
index b1b029429..56c3e7d34 100644
--- a/docs/source/markdown/podman-pod-create.1.md
+++ b/docs/source/markdown/podman-pod-create.1.md
@@ -127,6 +127,15 @@ The address must be within the network's IP address pool (default **10.88.0.0/16
 
 To specify multiple static IP addresses per pod, set multiple networks using the **--network** option with a static IP address specified for each using the `ip` mode for that option.
 
+#### **--ip6**=*ipv6*
+
+Specify a static IPv6 address for the pod, for example **fd46:db93:aa76:ac37::10**.
+This option can only be used if the pod is joined to only a single network - i.e., **--network=network-name** is used at most once -
+and if the pod is not joining another container's network namespace via **--network=container:_id_**.
+The address must be within the network's IPv6 address pool.
+
+To specify multiple static IPv6 addresses per pod, set multiple networks using the **--network** option with a static IPv6 address specified for each using the `ip6` mode for that option.
+
 #### **--label**=*label*, **-l**
 
 Add metadata to a pod (e.g., --label com.example.key=value).
diff --git a/docs/source/markdown/podman-run.1.md b/docs/source/markdown/podman-run.1.md
index 6c565e3d1..b98e563ef 100644
--- a/docs/source/markdown/podman-run.1.md
+++ b/docs/source/markdown/podman-run.1.md
@@ -497,19 +497,24 @@ Path to the container-init binary.
 
 When set to **true**, keep stdin open even if not attached. The default is **false**.
 
-#### **--ip6**=*ip*
+#### **--ip**=*ipv4*
 
-Not implemented.
-
-#### **--ip**=*ip*
-
-Specify a static IP address for the container, for example **10.88.64.128**.
+Specify a static IPv4 address for the container, for example **10.88.64.128**.
 This option can only be used if the container is joined to only a single network - i.e., **--network=network-name** is used at most once -
 and if the container is not joining another container's network namespace via **--network=container:_id_**.
 The address must be within the network's IP address pool (default **10.88.0.0/16**).
 
 To specify multiple static IP addresses per container, set multiple networks using the **--network** option with a static IP address specified for each using the `ip` mode for that option.
 
+#### **--ip6**=*ipv6*
+
+Specify a static IPv6 address for the container, for example **fd46:db93:aa76:ac37::10**.
+This option can only be used if the container is joined to only a single network - i.e., **--network=network-name** is used at most once -
+and if the container is not joining another container's network namespace via **--network=container:_id_**.
+The address must be within the network's IPv6 address pool.
+
+To specify multiple static IPv6 addresses per container, set multiple networks using the **--network** option with a static IPv6 address specified for each using the `ip6` mode for that option.
+
 #### **--ipc**=*mode*
 
 Set the IPC namespace mode for a container. The default is to create