ip_route_add
ret = ip_route_add(veth_name, TEST_FAMILY, taddr, this_ip_dest);
err = ip_route_add(veth_name, TEST_FAMILY, this_ip_addr, *p);
extern int ip_route_add(const char *intf, int family,
if (ip_route_add(veth, family, addr, dest))
if (ip_route_add(lo_intf, TEST_FAMILY, local_addr, local_addr))
if (ip_route_add(veth_name, family, this_ip_addr, client2))
if (ip_route_add(veth_name, family, this_ip_addr, client3))