LLC_UI
llc->llc_control = LLC_UI;
static uint8_t llc_snapid[6] = { LLC_SNAP_LSAP, LLC_SNAP_LSAP, LLC_UI, };
bpdu.cbu_ctl = LLC_UI;
bpdu.tbu_ctl = LLC_UI;
tpdu.tbu_ctl != LLC_UI)
llc2->llc_control == LLC_UI) {
llc.llc_control = LLC_UI;
llc->llc_control != LLC_UI) {
case LLC_UI:
llc->llc_control == LLC_UI &&
llc->llc_control = LLC_UI;
llc->llc_control = LLC_UI;
llc->llc_control = LLC_UI;
llc->llc_control = LLC_UI;