- the size of the ring buffer used to transfer packets from the kernel to the NIC. See 'ethtool -g ethX' and 'ethtool -g <dev> tx X'
- the number of packets the kernel's network layer will queue, it's 1000 by default on ethernet interfaces, which is way too large if your ethernet has a wifi segment in the middle of it. Set this to something lower with 'ip link set <dev> txqueuelen Y'
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