Documentation for tcset "--direction incoming" appears to be incorrect (?)

[ReubenM]

The documentation for tcset has the following:

  --src-network SRC_NETWORK
                        specify source IP-address/network that applies traffic
                        control. defaults to any. this option has no effect
                        when executing with "--direction incoming" option.
                        note: this option required to execute with the
                        --iptables option when using tbf algorithm.

This, and other documentation would make it appear that when setting rules for ingress (--direction incoming) we should use the "--network" argument to set the filter for which incoming packets to apply rules to. However this has no effect when I'm attempting to set delay. Using the --src-network argument instead does have effect and flips the src/dst parameters when defining the filter, achieving the desired result.