RHEL6: Sporadically VLAN interfaces are not configured after system reboot.

Issue

• Sporadically VLAN interfaces are not configured after system reboot.

• Sporadically VLAN interfaces are not configured for be2net driven NIC-ports after a system reboot. On a system two VLANs were configured on eth2 (eth2.353 and eth2.354) . They got their IP-addresses over DHCP and were working well. After 2-3 reboots none of the eth2 interfaces came up. The file /etc/udev/rules.d/70-persistent-net.rules contained an entry for eth2.354 and in /var/log/messages you can find entries like "udev:renamed network interface eth0 to eth2.354" etc. The command ifup eth2 aborted with

  Device eth2 does not seem to be present, delaying initialization
  

but lspci displayed all network interfaces. When removing the eth2.354 entrie from the persistent network rules and reboot of the system, the interfaces were up and running again.