cap_gethostbyname
struct hostent *cap_gethostbyname(cap_channel_t *chan, const char *name);
hpc = cap_gethostbyname(capdns, "example.com");
struct hostent *cap_gethostbyname(cap_channel_t *chan, const char *name);
hp = cap_gethostbyname(capdns, domain);
hp = cap_gethostbyname(capdns, hostname);