I could make it work manually, at least to pass chrismast at home :)
creating venet0:* devices and running ifup-route venet0. It just make it
work.

I know the probably better way to fix this would be installing the VE in a
new template, but I cound't think of anything I could do wrong regarding
only this VE.

Thanks and Merry Christmas to everyone.
Pablo


> Thanks Kirilll, this is the detailed information about the issue:
>
> ** After making changes suggested by Thorsten I got the following error:
>
> /////////////////// VZMIGRATE OUTPUT START ///////////////////////
> root@hostbw-253 ~]# vzmigrate -r no --online --keep-dst -v 10.0.10.251 111
> OPT:-r
> OPT:--online
> OPT:--keep-dst
> OPT:-v
> OPT:10.0.10.251
> Starting online migration of VE 111 on 10.0.10.251
> OpenVZ is running...
>     Loading /etc/vz/vz.conf and /etc/vz/conf/111.conf files
>     Check IPs on destination node: 190.2.55.204 10.0.10.204
> Preparing remote node
>     Copying config file
> 111.conf                                      100%  882     0.9KB/s  00:00
>
> Saved parameters for VE 111
> /usr/sbin/vzmigrate: line 382: [: missing `]'
>     Creating remote VE root dir
>     Creating remote VE private dir
>     VZ disk quota disabled -- skipping quota migration
> Syncing private
> Live migrating VE
>     Suspending VE
> Setting up checkpoint...
>         suspend...
>         get context...
> Checkpointing completed succesfully
>     Dumping VE
> Setting up checkpoint...
>         join context..
>         dump...
> Can not dump VE: Invalid argument
> iptables-save exited with 255
> Checkpointing failed
> Error:  Failed to dump VE
> Resuming...
> Running: /usr/lib/vzctl/scripts/vps-net_add
>         put context
> /////////////////// VZMIGRATE OUTPUT END ///////////////////////
>
> After this I tried changing the tmpve var inside vz.conf, just in case I
> didn't have the proper user's rights in /tmp folder. Nothing changed, the
> same errores came up.
>
> Then, I tried an offline migration, and it did the migration but the VE
> never started (because of networking not bein started). Actually there are
> 41 process running, but there is not networking configuration running.
> The same happens if I just rsync the VE private area and ve.cofig file.
> Exactly the same networking problem.
>
> /////////////////////////  VZCTL START 111 /////////////////////////////
>
> [root@ovz98 ~]# vzctl restart 111
> Restarting VE
> Stopping VE ...
> VE was stopped
> Running: /usr/lib/vzctl/scripts/vps-net_del
> Running: /usr/sbin/vzquota stat 111 -f
> VE is unmounted
> Running: /usr/lib/vzctl/scripts/vps-stop
> Starting VE ...
> Mounting root: /vz/root/111 /vz/private/111
> VE is mounted
> Set iptables mask 0x000017bf
> Set features mask 0000000000000000/0000000000000000
> Adding IP address(es): 10.0.10.200
> Running: /usr/lib/vzctl/scripts/vps-net_add
> Running VE script: /etc/vz/dists/scripts/redhat-add_ip.sh
> bash: line 61:  3793 Segmentation fault      /bin/sed -e
> "s|^$name=.*|$name=\"$value\"|" <${file} >${file}.$$
>  ERROR: Can't change file /etc/sysconfig/network
> Setting CPU units: 41562
> Configure meminfo: 145261
> Set hostname: hostname.domain.com
> Running VE script: /etc/vz/dists/scripts/redhat-set_hostname.sh
> bash: line 61:  3810 Segmentation fault      /bin/sed -e
> "s|^$name=.*|$name=\"$value\"|" <${file} >${file}.$$
>  ERROR: Can't change file /etc/sysconfig/network
> VE start in progress...
>
> /////////////////////////  VZCTL START 111 END
/////////////////////////////
>
>
> ////////////////// DMESG OUTPUT ////////////////////////
>
> ide: Assuming 33MHz system bus speed for PIO modes; override with
idebus=xx
> NFORCE-MCP61: IDE controller at PCI slot 0000:00:06.0
> NFORCE-MCP61: chipset revision 162
> NFORCE-MCP61: not 100% native mode: will probe irqs later
> NFORCE-MCP61: 0000:00:06.0 (rev a2) UDMA133 controller
>     ide0: BM-DMA at 0xffa0-0xffa7, BIOS settings: hda:pio, hdb:pio
> Probing IDE interface ide0...
> Probing IDE interface ide0...
> Probing IDE interface ide1...
> ide-floppy driver 0.99.newide
> usbcore: registered new driver hiddev
> usbcore: registered new driver usbhid
> drivers/usb/input/hid-core.c: v2.6:USB HID core driver
> PNP: PS/2 Controller [PNP0303:PS2K] at 0x60,0x64 irq 1
> PNP: PS/2 controller doesn't have AUX irq; using default 12
> serio: i8042 KBD port at 0x60,0x64 irq 1
> serio: i8042 AUX port at 0x60,0x64 irq 12
> mice: PS/2 mouse device common for all mice
> md: md driver 0.90.3 MAX_MD_DEVS=256, MD_SB_DISKS=27
> md: bitmap version 4.39
> TCP bic registered
> Initializing IPsec netlink socket
> NET: Registered protocol family 1
> NET: Registered protocol family 17
> powernow-k8: Found 1 AMD Athlon(tm) 64 X2 Dual Core Processor 5200+
> processors (2 cpu cores) (version 2.10.00)
> powernow-k8: MP systems not supported by PSB BIOS structure
> powernow-k8: MP systems not supported by PSB BIOS structure
> Using IPI Shortcut mode
> Freeing unused kernel memory: (0073a000-00775000) 236k freed
> Write protecting the kernel read-only data: 403k
> Time: hpet clocksource has been installed.
> USB Universal Host Controller Interface driver v3.0
> ohci_hcd: 2005 April 22 USB 1.1 'Open' Host Controller (OHCI) Driver (PCI)
> ACPI: PCI Interrupt Link [LUB0] enabled at IRQ 11
> PCI: setting IRQ 11 as level-triggered
> ACPI: PCI Interrupt 0000:00:02.0[A] -> Link [LUB0] -> GSI 11 (level,
low) ->
> IRQ 11
> PCI: Setting latency timer of device 0000:00:02.0 to 64
> ohci_hcd 0000:00:02.0: OHCI Host Controller
> ohci_hcd 0000:00:02.0: new USB bus registered, assigned bus number 1
> ohci_hcd 0000:00:02.0: irq 11, io mem 0xdfeff000
> usb usb1: configuration #1 chosen from 1 choice
> hub 1-0:1.0: USB hub found
> hub 1-0:1.0: 8 ports detected
> ACPI: PCI Interrupt Link [LUB2] enabled at IRQ 10
> PCI: setting IRQ 10 as level-triggered
> ACPI: PCI Interrupt 0000:00:02.1[B] -> Link [LUB2] -> GSI 10 (level,
low) ->
> IRQ 10
> PCI: Setting latency timer of device 0000:00:02.1 to 64
> ehci_hcd 0000:00:02.1: EHCI Host Controller
> ehci_hcd 0000:00:02.1: new USB bus registered, assigned bus number 2
> ehci_hcd 0000:00:02.1: debug port 1
> PCI: cache line size of 64 is not supported by device 0000:00:02.1
> ehci_hcd 0000:00:02.1: irq 10, io mem 0xdfefec00
> ehci_hcd 0000:00:02.1: USB 2.0 started, EHCI 1.00, driver 10 Dec 2004
> usb usb2: configuration #1 chosen from 1 choice
> hub 2-0:1.0: USB hub found
> hub 2-0:1.0: 8 ports detected
> SCSI subsystem initialized
> libata version 2.21 loaded.
> sata_nv 0000:00:08.0: version 3.4
> ACPI: PCI Interrupt Link [LSA0] enabled at IRQ 15
> PCI: setting IRQ 15 as level-triggered
> ACPI: PCI Interrupt 0000:00:08.0[A] -> Link [LSA0] -> GSI 15 (level,
low) ->
> IRQ 15
> PCI: Setting latency timer of device 0000:00:08.0 to 64
> scsi0 : sata_nv
> scsi1 : sata_nv
> ata1: SATA max UDMA/133 cmd 0x0001d480 ctl 0x0001d402 bmdma 0x0001cc00 irq
> 15
> ata2: SATA max UDMA/133 cmd 0x0001d080 ctl 0x0001d002 bmdma 0x0001cc08 irq
> 15
> ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
> ata1.00: ATA-7: WDC WD2500KS-00MJB0, 02.01C03, max UDMA/133
> ata1.00: 488397168 sectors, multi 16: LBA48
> ata1.00: configured for UDMA/133
> ata2: SATA link down (SStatus 0 SControl 300)
>   Vendor: ATA       Model: WDC WD2500KS-00M  Rev: 02.0
>   Type:   Direct-Access                      ANSI SCSI revision: 05
> SCSI device sda: 488397168 512-byte hdwr sectors (250059 MB)
> sda: Write Protect is off
> sda: Mode Sense: 00 3a 00 00
> SCSI device sda: drive cache: write back
> SCSI device sda: 488397168 512-byte hdwr sectors (250059 MB)
> sda: Write Protect is off
> sda: Mode Sense: 00 3a 00 00
> SCSI device sda: drive cache: write back
>  sda: sda1 sda2 sda3 sda4 < sda5 >
> sd 0:0:0:0: Attached scsi disk sda
> kjournald starting.  Commit interval 5 seconds
> EXT3-fs: mounted filesystem with ordered data mode.
> EDAC MC: Ver: 2.0.1 Nov 30 2007
> EDAC MC0: Giving out device to k8_edac Athlon64/Opteron: DEV 0000:00:18.2
> input: PC Speaker as /class/input/input0
> parport: PnPBIOS parport detected.
> parport0: PC-style at 0x378, irq 7 [PCSPP,TRISTATE]
> 8139cp: 10/100 PCI Ethernet driver v1.2 (Mar 22, 2004)
> 8139cp 0000:01:06.0: This (id 10ec:8139 rev 10) is not an 8139C+
compatible
> chip
> 8139cp 0000:01:06.0: Try the "8139too" driver instead.
> Floppy drive(s): fd0 is 1.44M
> 8139too Fast Ethernet driver 0.9.27
> ACPI: PCI Interrupt Link [LNKA] enabled at IRQ 11
> ACPI: PCI Interrupt 0000:01:06.0[A] -> Link [LNKA] -> GSI 11 (level,
low) ->
> IRQ 11
> eth0: RealTek RTL8139 at 0xf8942c00, 00:08:54:b0:a5:98, IRQ 11
> eth0:  Identified 8139 chip type 'RTL-8100B/8139D'
> FDC 0 is a post-1991 82077
> sd 0:0:0:0: Attached scsi generic sg0 type 0
> ACPI: PCI Interrupt Link [LAZA] enabled at IRQ 11
> ACPI: PCI Interrupt 0000:00:05.0[B] -> Link [LAZA] -> GSI 11 (level,
low) ->
> IRQ 11
> PCI: Setting latency timer of device 0000:00:05.0 to 64
> lp0: using parport0 (interrupt-driven).
> lp0: console ready
> ACPI: Power Button (FF) [PWRF]
> ACPI: Power Button (CM) [PWRB]
> ibm_acpi: ec object not found
> md: Autodetecting RAID arrays.
> md: autorun ...
> md: ... autorun DONE.
> device-mapper: ioctl: 4.11.0-ioctl (2006-09-14) initialised:
> dm-devel@redhat.com
> EXT3 FS on sda2, internal jou