virtual_get_default
v = virtual_get_default(dst->sa_family);
if (t->virtual == (struct transport *)virtual_get_default(AF_INET) ||
t->virtual == (struct transport *)virtual_get_default(AF_INET6)) {
v = virtual_get_default(dst->sa_family);
if (t->virtual == (struct transport *)virtual_get_default(AF_INET) ||
t->virtual == (struct transport *)virtual_get_default(AF_INET6)) {
struct virtual_transport *virtual_get_default(sa_family_t);