Symbol: DNS_OPT_EXPIRE
usr.bin/dig/dighost.c
2251
opts[i].code = DNS_OPT_EXPIRE;
usr.bin/dig/lib/dns/message.c
2606
} else if (optcode == DNS_OPT_EXPIRE) {
usr.bin/dig/lib/dns/rdata/generic/opt_41.c
153
case DNS_OPT_EXPIRE: