fuser -n tcp 80 always worked because the v4 or v6 problem didnt hit
single ports, but any ipv4 or ipv6 remote address wouldn't work.
Caught by Coverity CID46269
#ifdef WITH_IPV6
int
-parse_inet(struct names *this_name, const int ipv6_only, const int ipv4_only,
+parse_inet(struct names *this_name, const int ipv4_only, const int ipv6_only,
struct ip_connections **ip_list, struct ip6_connections **ip6_list)
#else
int parse_inet(struct names *this_name, struct ip_connections **ip_list)