OVS_KEY_ATTR_ND
if (attrs & (1 << OVS_KEY_ATTR_ND)) {
nd_key = nla_data(a[OVS_KEY_ATTR_ND]);
attrs &= ~(1 << OVS_KEY_ATTR_ND);
| (1 << OVS_KEY_ATTR_ND)
nla = nla_reserve(skb, OVS_KEY_ATTR_ND, sizeof(*nd_key));
key_expected |= 1 << OVS_KEY_ATTR_ND;
mask_allowed |= 1 << OVS_KEY_ATTR_ND;
[OVS_KEY_ATTR_ND] = { .len = sizeof(struct ovs_key_nd) },