NG_H4_ALERT
NG_H4_ALERT("%s: %s - input buffer overflow, c=%#x, got=%d\n",
NG_H4_ALERT("%s: %s - packet too big for " \
NG_H4_ALERT("Packet header:\n");
NG_H4_ALERT("%#x ", sc->ibuf[b]);
NG_H4_ALERT("\n");