static int instanciate_veth(char *n1, char **n2)
{
int err;
err = snprintf(*n2, IFNAMSIZ, "%sp", n1);
if (err < 0 || err >= IFNAMSIZ) {
fprintf(stderr, "nic name too long\n");
return -1;
}
err = lxc_veth_create(n1, *n2);
if (err) {
fprintf(stderr, "failed to create %s-%s : %s\n", n1, *n2,
strerror(-err));
return -1;
}
/* changing the high byte of the mac address to 0xfe, the bridge interface
* will always keep the host's mac address and not take the mac address
* of a container */
err = setup_private_host_hw_addr(n1);
if (err) {
fprintf(stderr, "failed to change mac address of host interface '%s' : %s",
n1, strerror(-err));
}
return netdev_set_flag(n1, IFF_UP);
}
static int instantiate_veth(char *veth1, char *veth2)
{
int ret;
ret = lxc_veth_create(veth1, veth2);
if (ret < 0) {
usernic_error("Failed to create %s-%s : %s.\n", veth1, veth2,
strerror(-ret));
return -1;
}
/* Changing the high byte of the mac address to 0xfe, the bridge
* interface will always keep the host's mac address and not take the
* mac address of a container. */
ret = setup_private_host_hw_addr(veth1);
if (ret < 0)
usernic_error("Failed to change mac address of host interface "
"%s : %s\n", veth1, strerror(-ret));
return netdev_set_flag(veth1, IFF_UP);
}
