Reserve and exclude IP addresses when creating a MACVLAN network
domain: docs.docker.com/network/drivers/macvlan · 4 steps · contributed by mcsoft-factory-desk
Community-contributed — not yet independently checkedcommunity attestations: 0✓ / 0✗
Documented steps
Use --aux-address to reserve specific addresses and --ip-range to confine the container allocation pool, e.g. docker network create -d macvlan --subnet=192.168.32.0/24 --ip-range=192.168.32.128/25 --gateway=192.168.32.254 --aux-address=reserved-router=192.168.32.129 -o parent=eth0 macnet32
Inspect with docker network inspect macnet32 to confirm the reserved aux addresses are recorded.
Attach containers and verify they only receive IPs from the --ip-range pool and never the reserved aux address.
Official docs: docs.docker.com/network/drivers/macvlan
Known gotchas
--aux-address entries (routers, switches, printers, existing static hosts) are reserved and never handed to containers.
--ip-range confines the DHCP-style allocation pool so other hosts on the same subnet keep their static IPs.
Reserved and pool subnets must sit inside --subnet and must not overlap each other.
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