On 21 Nov 2012, at 12:01, Jordi Guillaumes i Pons wrote: El 21/11/2012, a les 10:31, Sampsa Laine <sampsa at mac.com> va escriure: z/OS, AIX/ESA[370] and Debian/390x all under one emulated z/Arch box. That WOULD be cool. And slow. VERY slow :) I wasn't thinking of using this for production use. Compiling the kernel on Hercules was a giggle, took like 2 days. If only they could get Ethernet support working (right now the tun/tap thing is a weird point-to-point link AFAIK). It is. It works fine for TCP/IP (at level 3) but no level 2 so far. Really? How? I thought the level 3 works as a point to point link as I said, the level 2 stuff would let things like DECNET run. Got a sample say Debian/390 setup you'd like to share? Sampsa