merits of "block" vs "return-rst" with ipf?

[Seth Arnold <sarnold_(_at_)_willamette_(_dot_)_edu>]

Greetings all,

A few weeks ago, @home decided to firewall me. Or, at least, where
incoming connections used to work, they don't work now. :)

I am curious if this is partially as a result of my using `block' in my
/etc/ipf.rules rather than `return-rst'. I don't know the difference
between the two, and am not entirely sure where to turn for information.
(I don't own Stevenson's Illustrated TCP/IP. :)

Does anyone have suggestions one way or the other about block vs
return-rst, or know where I should go for more information about them?

Thank you. :)