X11 calls can be just forwarded to the currently running server in your machine. The rest, yes, it must be implemented.
PD: I'm not saying IE for Unix would run under that; Solaris it's pretty much post BSD 2.1 and maybe from another Unix branch.
But code from NetBSD could be adapted for such task.
* illumos
* binfmt (Assuming a Linux host)
* qemu
I'm not saying it's zero work, but this looks entirely solvable.
X11 calls can be just forwarded to the currently running server in your machine. The rest, yes, it must be implemented.
PD: I'm not saying IE for Unix would run under that; Solaris it's pretty much post BSD 2.1 and maybe from another Unix branch.
But code from NetBSD could be adapted for such task.