if (pcap_compile(pc, &active_filter, *argv, 1, netmask) == -1) {
option_error("error in active-filter expression: %s\n",
pcap_geterr(pc));
if (pcap_compile(pc, &active_filter, *argv, 1, netmask) == -1) {
option_error("error in active-filter expression: %s\n",
pcap_geterr(pc));