cap_gethostbyaddr
struct hostent *cap_gethostbyaddr(cap_channel_t *chan, const void *addr,
hpc = cap_gethostbyaddr(capdns, &ip4, sizeof(ip4), AF_INET);
hpc = cap_gethostbyaddr(capdns, &ip6, sizeof(ip6), AF_INET6);
struct hostent *cap_gethostbyaddr(cap_channel_t *chan, const void *addr,
caphp = cap_gethostbyaddr(chan, &ipaddr, sizeof(ipaddr), family);
caphp = cap_gethostbyaddr(chan, &ipaddr, sizeof(ipaddr), AF_INET6);
hp = cap_gethostbyaddr(capdns, (char *)&ina, sizeof(ina), AF_INET);
hp = cap_gethostbyaddr(capdns, (char *)&in, sizeof(in),