ifup eth0 SIOCSIFFLAGS: Cannot allocate memory Failed to bring up eth0 Centos Network won't work after kernel update and reboot -

ifup eth0 SIOCSIFFLAGS: Cannot allocate memory Failed to bring up eth0 Centos Network won't work after kernel update and reboot

ifup eth0
SIOCSIFFLAGS: Cannot allocate memory
Failed to bring up eth0

This is on a Centos 5.5 machine with OpenVZ kernel 2.6.18-238.12.1.el5.028stab091.1PAE, I updated 3 systems with the same hardware to the same kernel and for some reason the network didn't come back.

This only happened once the first time I booted into the new kernel and hasn't happened again but this is a serious issue for those running systems from remote locations such as a datacenters.

I believe rebooting is what fixed everything or possibly removing and reloading the kernel module for the NIC.


This may be a sign of a bad motherboard or power supply, eventually the related system just wouldn't come back after a reboot and would not power up at all.  Further, before the system died weird and random things happened with grub needing to be reinstalled after being corrupted etc...


  • /usr/bin/ld: cannot find -lboost_system-mt-s /usr/bin/ld: cannot find -lboost_filesystem-mt-s /usr/bin/ld: cannot find -lboost_program_options-mt-s /usr/bin/ld: cannot find -lboost_thread-mt-s collect2: error: ld returned 1 exit status make: *** [cag
  • Wine uninstalled broken on Linux Mint
  • ffmpeg trouble concatenating similar but different files
  • ffmpeg Unable to Use Hardware Encoding with Nvidia 3.40 Driver and GT210 card
  • Linux Mint USB Kernel Tainted and Locked Port/Dev File
  • ffmpeg Linux Mint download, compile and install howto
  • OpenVZ error : Container start failed (try to check kernel messages, e.g. "dmesg | tail") Locked by: pid 166638, cmdline vzctl start 888171
  • How to extract view contents of initramfs image gzip'd
  • Linux how to copy GPT partition table with dd
  • Centos 7 How To Change Hostname
  • Debian/Mint/Ubuntu Font Packs/Recommended To Install
  • Migrate Centos 7 from Single HDD to mdadm RAID 10 array:
  • How to change reserved blocks in Linux partition
  • Reading package lists... Done W: GPG error: http://ppa.launchpad.net trusty InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY D46F45428842CE5E
  • Centos 7 A start job is running for dev-mapper-clx2droot.device (8min 44s / no limit)
  • USB 3.0 External HDD Enclosure Seagate UAS problems - [sdd] tag#1 CDB: Write(16) 8a 00 00 00 00 01 70 04 08 68 00 00 00 08 00 00
  • Centos 7 Cudaminer Nvidia setup guide
  • USB 3.0 PCI x1 Card Review VIA VL805 on Linux Review and Experience
  • rsync run as root sudo without password
  • Why won't my Linux Mint boot after I manually installed a new kernel?