SAF_RECVCRC32
((fcs16 == PPPGOODFCS16 && !(state->sa_flags & SAF_RECVCRC32)) ||
(state->sa_flags & SAF_RECVCRC32))) ||
crclen = (state->sa_flags & SAF_RECVCRC32) ?
state->sa_flags &= ~SAF_RECVCRC32 & ~SAF_RECVCRCNONE;
state->sa_flags |= SAF_RECVCRC32;