I removed the first entry (HyperV05). It is actually the machine hosting the iSCSI target anyway.
I have a small network with only a single subnet so every machine can reach every other machine. I'm not sure how to get into the ESXi shell (I did figure out how to enable it, just ot how to access it) but I ran a management network test that pinged a few ip addresses. I changed one of the addresses to the iSCSI host and it reported that it pinged it OK.
Bert