Skip to contentSkip to conversation

ipconfig problems

DISCUSSION Robert Schwebel 1 participant 1 message Jun 21, 2002

lore
Share & tools
lore
#0 lore raw

Hi,

[I asked this recently on the linux-net list, but nobody answered. Perhaps I have more luck here.]

is somebody on this list maintaining the ipconfig (bootp/dhcp) stuff? In Documentation/nfsroot.txt should be a hint that for the "autoconf" parameter of "ip=" there is also the possibility to use "dhcp". The documentation differs from the sourcecode in net/ipv4/ipconfig.c here.

Reading the docs I thought that if you want to use DHCP you also have to set "ip=bootp", but this goes terribly wrong. I have the impression that there can be inconsistencies between the compile time- and runtime configuration. For example, if you only enable dhcp in the kernel configuration and put "ip=bootp" on the command line the ip_auto_config_setup function seems to try to interpret the string as an IP address, which results in ic_myaddr being set to something else than INADDR_NONE. Afterwards in ic_bootp_recv this is recognized and the received (correct) DHCPOFFER is silently droped, which is a pain in the ass to debug ... :-)

Cheers,
Robert

Signature · 6 lines
 +--------------------------------------------------------+
 | Dipl.-Ing. Robert Schwebel | http://www.pengutronix.de |
 | Pengutronix - Linux Solutions for Science and Industry |
 |   Braunschweiger Str. 79,  31134 Hildesheim, Germany   |
 |    Phone: +49-5121-28619-0 |  Fax: +49-5121-28619-4    |
 +--------------------------------------------------------+