For those (like me) unable to install from Love but who see the first incoming connection in the console, try plugging the two systems directly with a crossover cable. I first tried Love from a Pi5 plugged into the network I use for old machines (ahem, it's still 10Gb) but whilst this worked from IRIX and I could NFS mount, I couldn't launch the installer. I pulled everything out and used a standalone router, but with the same result. Finally I shoved a crossover cable between the Pi and SGI, then set the Pi's wired connection as "Shared to other computers" with a manual IP address, and that works.
I'm currently happily waiting for IRIX to install on my Onyx4... and it's better than messing about with CDs!