Ok, I've solved this issue by myself. It turned out to be a MAC address conflict. This is an Intel S5000PAL board with to NICs LAN1 has MAC 00:15:17:77:4E:DE LAN2 has MAC 00:15:17:77:4E:DF So I assigned (see below) next MAC - 00:15:17:77:4E:E0 to first domU on that machine. > ----------------------------------------------- > kernel = "/boot/vmlinuz-install" > ramdisk = "/boot/initrd-install.img" > extra = "ks=http://xx.yy.zz.xx/ks/domu.ks" > name = "domu" > vcpus = "4" > memory = "2048" > disk = [ 'phy:vg0/d1da,xvda,w', > 'phy:vg0/d1db,xvdb,w', > 'phy:vg0/d1dc,xvdc,w', ] > vif = [ 'mac=00:15:17:77:4E:E0, bridge=xenbr0' ] > on_reboot = 'destroy' > on_crash = 'destroy' > ----------------------------------------------- But unfortuately I've forgot Intel S5000PAL has IPMI LAN capabilities that are preconfigured on lan channel 1 and 2 of (LAN1, LAN2) with Mac addresses... guess which? ;) 00:15:17:77:4E:E0 00:15:17:77:4E:E1 After simple change to: > vif = [ 'mac=00:15:17:77:4E:E2, bridge=xenbr0' ] xm create install.cfg moved forward. -- Tomek