Thanks to Trey Aspelund from FRR / Cumulus
Anycast-gw has MAC=00:00:5e:00:01:01 IPv4=192.0.2.1/24 and IPv6=2001:db8::1/64
# create the vlan-aware bridge ip link add bridge type bridge vlan_filtering 1 # add ports to the bridge ip link set eth0 master bridge # create the SVI ip link add link bridge name vlan1000 type vlan id 1000 protocol 802.1q # create/configure the macvlan (used for anycast-gw) ip link add link vlan1000 name vlan1000-v0 type macvlan mode private ip link set dev vlan1000-v0 address 00:00:5e:00:01:01 ip addr add 192.0.2.1/24 dev vlan1000-v0 metric 1024 ip addr add 2001:db8::1/64 dev vlan1000-v0 metric 1024 # add permanent fdb entry to bridge so the SVI gets packets destined for its MAC bridge fdb replace 00:00:5e:00:01:01 dev bridge vlan 1000 permanent self