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11th chunk of `content/manuals/engine/network/drivers/ipvlan.md`
eac775f44032efe441aba7fc426d4de2feba72cc956a24680000000100000857
# Gateways for both v4 and v6 are set to a dev e.g. 'default dev eth0'
$ docker network create -d ipvlan \
    --subnet=192.168.110.0/24 \
    --subnet=192.168.112.0/24 \
    --subnet=2001:db8:abc6::/64 \
    -o parent=eth0 \
    -o ipvlan_mode=l3 ipnet110


# Start a few of containers on the network (ipnet110)
# in separate terminals and check connectivity
$ docker run --net=ipnet110 -it --rm alpine /bin/sh
# Start a second container specifying the v6 address
$ docker run --net=ipnet110 --ip6=2001:db8:abc6::10 -it --rm alpine /bin/sh
# Start a third specifying the IPv4 address
$ docker run --net=ipnet110 --ip=192.168.112.30 -it --rm alpine /bin/sh
# Start a 4th specifying both the IPv4 and IPv6 addresses
$ docker run --net=ipnet110 --ip6=2001:db8:abc6::50 --ip=192.168.112.50 -it --rm alpine /bin/sh
```

Interface and routing table outputs are as follows:

```console
$$ ip a show eth0
63: eth0@if59: <BROADCAST,MULTICAST,NOARP,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN group default
    link/ether 00:50:56:2b:29:40 brd ff:ff:ff:ff:ff:ff
    inet 192.168.112.2/24 scope global eth0
       valid_lft forever preferred_lft forever
    inet6 2001:db8:abc4::250:56ff:fe2b:2940/64 scope link
       valid_lft forever preferred_lft forever
    inet6 2001:db8:abc6::10/64 scope link nodad
       valid_lft forever preferred_lft forever

# Note the default route is the eth device because ARPs are filtered.
$$ ip route
  default dev eth0  scope link
  192.168.112.0/24 dev eth0  proto kernel  scope link  src 192.168.112.2

$$ ip -6 route
2001:db8:abc4::/64 dev eth0  proto kernel  metric 256
2001:db8:abc6::/64 dev eth0  proto kernel  metric 256
default dev eth0  metric 1024
```

> [!NOTE]
>
> There may be a bug when specifying `--ip6=` addresses when you delete a
> container with a specified v6 address and then start a new container with the
> same v6 address it throws the following like the address isn't properly being
> released to the v6 pool. It will fail to unmount the container and be left dead.

```console
docker: Error response from daemon: Address already in use.
```

### Manually create 802.1Q links
Title: IPvlan L3 Network Configuration and Troubleshooting
Summary
This section provides a detailed example of creating an IPvlan L3 network with both IPv4 and IPv6 subnets, showing the commands to create the network and start several containers with specific IP addresses. It also includes the resulting interface and routing table configurations, highlighting that the default route points to the 'eth0' device in L3 mode. The section also notes a potential bug related to reusing IPv6 addresses in containers, where an "Address already in use" error may occur after deleting a container and restarting a new container with the same IPv6 address.