I tried to disable/enable with ip link set lan1 down && ip link set lan1 up, not working...
With unplug/plug the Ethernet cable :
Mon Dec 13 21:36:05 2021 kern.info kernel: [ 354.868699] br-lan: port 1(lan1) entered disabled state
Mon Dec 13 21:36:05 2021 kern.info kernel: [ 354.876696] mv88e6085 f1072004.mdio-mii:00 lan1: configuring for phy/gmii link mode
Mon Dec 13 21:36:05 2021 kern.info kernel: [ 354.889119] 8021q: adding VLAN 0 to HW filter on device lan1
Mon Dec 13 21:37:39 2021 kern.info kernel: [ 449.725494] mv88e6085 f1072004.mdio-mii:00 lan1: Link is Up - 1Gbps/Full - flow control rx/tx
Mon Dec 13 21:37:39 2021 kern.info kernel: [ 449.734089] br-lan: port 1(lan1) entered blocking state
Mon Dec 13 21:37:39 2021 kern.info kernel: [ 449.739347] br-lan: port 1(lan1) entered forwarding state
Mon Dec 13 21:37:39 2021 daemon.notice netifd: Network device 'lan1' link is up