Symbol: CHNG_ACK
usr.sbin/acme-client/chngproc.c
146
cc = writeop(netsock, COMM_CHNG_ACK, CHNG_ACK);
usr.sbin/acme-client/netproc.c
890
if (readop(Cfd, COMM_CHNG_ACK) != CHNG_ACK)