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From: <ebi...@ln...> - 2002-12-13 03:28:16
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Michael Brown <mb...@fe...> writes: > On 12 Dec 2002, Eric W. Biederman wrote: > > Currently etherboot does not interpret any encapsulated options > > (except in the case of FreeBSD). > > Not quite sure what you mean here. Etherboot will accept any of the old > Etherboot-specific options inside an etherboot-encapsulated-options field > (i.e. a dhcp option 150). But all such options have been removed from the core of etherboot, with I believe the removal of the image menu. Options always interpreted: RFC1533_PAD RFC1533_END RFC1533_EXTENSIONPATH /* STD tftp file name of more options */ Options that are never used in encapsulated options: RFC1533_NETMASK /* Standard */ RFC1533_GATEWAY /* Standard */ RFC1533_VENDOR /* Vendor encapsulated options */ RFC2132_MSG_TYPE /* Standard */ RFC2132_SRV_ID /* Standard */ RFC1533_HOSTNAME /* Standard */ RFC1533_VENDOR_ETHERBOOT_ENCAP /* Only truly etherboot specific option */ Options only interpreted in encapsulated options: RFC1533_VENDOR_MAGIC /* Only option really used.. */ RFC1533_VENDOR_HOWTO /* FreeBSD only */ RFC1533_VENDOR_KERNEL_ENV /* FreeBSD only */ The only place etherboot specific options show up is in the code of mknbi.... > Option 128 is marked as ENCAP_OPT hence if ALLOW_ONLY_ENCAPSULATED is > defined then it is valid only within etherboot-encapsulated-options and > hence acts as a magic signature for the etherboot-encapsulated-options > field. I missed that one, so yes we have something that works there. > > With respect to transmitting options I am less certain on how that > > should be handled. But my gut impression says vendor encapsulated > > options is the way to go. But it has been suggested that dhcpv3 > > cannot parse those options. I will at least want to verify that > > before I go any further. > > There is a sample DHCPD config file in > contrib/initrd/dhcpd.conf.etherboot.include. If you can achieve what is > in there using vendor-encapsulated-options then one of my two objections > to using VEO will disappear. Thanks, I will take a look. Eric |
