firehol
Interface rate doesn't affect clients via ip forwarding
I'm using a very simple config to test this on Arch Linux:
DEVICE=ens224
INPUT_SPEED=512kbps
OUTPUT_SPEED=512kbps
interface $DEVICE world bidirectional input rate $INPUT_SPEED output rate $OUTPUT_SPEED
My plan is to use FireQOS on my gateway VM which has ip forwarding enabled to allow clients to pass traffic through it. Setting a low rate for testing (say 512kbps) affects the gateway VM with FireQOS installed, but clients seem to run at full speed. If I masquerade the clients in iptables then it works, but I don't want to mask the clients as I would like to see true src and dst addresses when it comes to logging/graphing.
One thing to note is that if I set "max 10%" on a class this does seem to have some affect on the clients, but seems to be about 10% of the full possible speed, not 10% of the rate. The gateway VM is affected by dropping to 10% of the rate, so there's a clear difference between clients and the gateway VM despite them both going through the ens224 NIC on the gateway VM for any traffic. Any thoughts would be appreciated. Thanks
