KERNEL_DCB was introduced in 40f1db9cb1, however the dcb utility is not
enabled for iproute2. Although DCB is not generally available among
Ethernet cards, not having the dcb utility renders it completely
unchangeable.
On aarch64, it takes ~85.3KiB.
Signed-off-by: David Yang <mmyangfl@gmail.com>
Link: https://github.com/openwrt/openwrt/pull/21606
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
f0f5525b75