pxe config file named by ip can not be fond by host booted from uefi over IPv6 network

[zhengyong]

  Ironic will create pxe config file named HOST-IP.conf in tftp server work directory for host whose boot mode is uefi and pxe ip is HOST-IP. This is ok if host work in IPv4 network environment, but if host works in one IPv6 environment, host
 will boot fail.

  If it get one IP 3ffe:501:ffff:101:0:0:0:10e when pxe boot, ironic will create one config named 3ffe\:501\:ffff\:101\:\:10e.conf for this host. while host wants is 3ffe:501:ffff:101:0:0:0:10e.conf.

[Michael Turek (mjturek)]

I would've expected this situation to raise an InvalidIPv4Address exception [0]. Not sure why it didn't. That aside, it looks like there indeed does need to be some modification to allow for IPv6 when using PXE and UEFI. [1]

[0] https://github.com/openstack/ironic/blob/master/ironic/common/pxe_utils.py#L98
[1] https://github.com/openstack/ironic/blob/master/ironic/common/pxe_utils.py#L246

[zhengyong (zhengy23)]

Actually it raises InvalidIPv4Address exception before I chang code in https://github.com/openstack/ironic/blob/master/ironic/dhcp/neutron.py#L157 to Line 163
which is:
if ip_address:
    if netutils.is_valid_ipv4(ip_address):
        return ip_address
    else:
        LOG.error("Neutron returned invalid IPv4 address %s.",
                   ip_address)
        raise exception.InvalidIPv4Address(ip_address=ip_address)

then begin to create pxe config named by one IPv6 address in function https://github.com/openstack/ironic/blob/master/ironic/common/pxe_utils.py# L246 .

Create pxe config named by interface mac works good. If host boots from UEFI pxe over IPv6 network, mac of its boot interface is 11:22:33:44:55:66, bootloader file BOOTX64.EFI got from centos7.4.ISO/EFI/BOOT directory will first load file named 'grub.cfg-11-22-33-44-55-66-'

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/540649

[OpenStack Infra (hudson-openstack)]

Change abandoned by zhengyong ([e-mail]) on branch: master
Review: https://review.openstack.org/540649

[Julia Kreger (juliaashleykreger)]

I think we've sort of taken care of this over time, although the IP address linking code is still not great, it definitely is no longer the first class path taken, because the default logic in ironic for the last few years has been to do MAC based file names. As such, This should longer a blocker to IPv6 based PXE as the default included template is coded to use a MAC address now.