DRBD_PROT_A
if (new_disk_conf->fencing == FP_STONITH && nc->wire_protocol == DRBD_PROT_A) {
if (new_net_conf->wire_protocol == DRBD_PROT_A && fp == FP_STONITH)
if (new_net_conf->on_congestion != OC_BLOCK && new_net_conf->wire_protocol != DRBD_PROT_A)
wp = nc ? nc->wire_protocol - DRBD_PROT_A + 'A' : ' ';