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 && llc->llc_snap.org_code[0] == 0 &&
llc->llc_control == LLC_UI && llc->llc_snap.org_code[0] == 0 &&
llc->llc_control = LLC_UI;
llc->llc_control = LLC_UI;
llc->llc_control = LLC_UI;