Mailing the story:
Configuring Xen 4.0.1 & 2.6.32.23 pvops kernel for stable networking with OpenIndiana PV Guests
This post is targeting pvops kernel 2.6.32.23 configuration close to 2.6.34.7 aka Suse 11.3 Xenified kernel. This config by some reasons allows OpenSolaris134/OpenIndiana147 PV Guest obtain IP address pretty stable on systems Xen 4.0.1 & PVOPS like it happens on OpenSuse 11.3 with Xen Hypervisor upgraded up to 4.0.1 and the most recent XenLinux 2.6.34.7 kernel.