probe netfilter.bridge.* {
    if (protocol == llcproto_stp) {
        printf("%s, ", tz_ctime(gettimeofday_s()))
        printf("STP Protocol ID %x, ", br_prid)
        printf("Version ID %x, ", br_vid)
        printf("Flags %d, ", br_flags)
        printf("bridge-id %s\n", br_mac)
        printf("Message Age %ds, ", br_msg/256)
        printf("Max-Age %ds, ", br_max/256)
        printf("Hello-time %ds, ", br_htime/256)
        printf("Forward-delay %ds\n", br_fd/256)
        printf("Root-id %s, ", br_rmac)
        printf("Root-pathcost %d\n", br_cost)
    }
}