Hi,

I don't have 802.1q enabled so I didn't see this.

Can you provide the base commit you applied the patches to?

Based on the latest linux-next, 20250917
with these enabled configurations:

CONFIG_IPV6=y
CONFIG_STP=y
CONFIG_GARP=y
CONFIG_MRP=y
CONFIG_BRIDGE=y
CONFIG_VLAN_8021Q=y
CONFIG_STMMAC_ETH=y
CONFIG_STMMAC_PLATFORM=y
CONFIG_DWMAC_SUN8I=y
CONFIG_DWMAC_SUN55I=y
CONFIG_PCS_XPCS=y

[   38.818801] 8021q: adding VLAN 0 to HW filter on device eth1

When the interface is down:
~ # ifconfig eth1 down
[   69.181869] dwmac-sun55i 4510000.ethernet eth1: Timeout accessing MAC_VLAN_Tag_Filter
[   69.189827] dwmac-sun55i 4510000.ethernet eth1: failed to kill vid 0081/0

Thanks,
Chukun