--- zzzz-none-000/linux-4.4.60/net/bridge/br_stp_timer.c 2017-04-08 07:53:53.000000000 +0000 +++ jet-2400-727/linux-4.4.60/net/bridge/br_stp_timer.c 2021-03-17 14:36:41.000000000 +0000 @@ -40,7 +40,7 @@ if (br->dev->flags & IFF_UP) { br_config_bpdu_generation(br); - if (br->stp_enabled != BR_USER_STP) + if (br->stp_enabled == BR_KERNEL_STP) mod_timer(&br->hello_timer, round_jiffies(jiffies + br->hello_time)); }