src/linux/Documentation/Changes says that the latest version of tunelp supports "trustirq". This does not appear to be in tunelp-1.3.-10 shipped with 6.1. Same file references ftp://e-mind.com/pub/linux/tunelp/tunelp-0-2.1.131.tar.gz and various sites have tunelp-1.4-2.src.rpm which I am about to investigate...
tunelp is officially moved into util-linux, and our next util-linux package, which will be in our next RawHide release and our next Red Hat Linux release, will include that version. Thanks for pointing out the fact that we hadn't yet moved it over.