>Number:         12096
>Category:       kern
>Synopsis:       new route.c break diskless operation with dhclient in current
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Feb 01 05:29:00 PST 2001
>Closed-Date:
>Last-Modified:
>Originator:     Thilo Manske
>Release:        -current (1.5R) since Jan 28
>Organization:
>Environment:
	
Architecture: pmax, sparc probably others as well
Machine: multiple
dhclient built from current sources (same date as kernels)

>Description:

booting a pmax (or sparc and probably others) diskless fails when dhclient
starts running:

[...]
Starting network.
add net 127.0.0.0: gateway 127.0.0.1
Configuring network interfaces:.
Starting dhclient.
Internet Software Consortium DHCP Client V3.0b2pl9
Copyright 1995-2000 Internet Software Consortium.
All rights reserved.
For info, please visit http://www.isc.org/products/DHCP

nfs send error 65 for <path to nfs root>
[long pause/freeze]

NB: 65 is EHOSTUNREACH /* No route to host */

A kernel recompiled with sys/net/route.c reverted to version 1.39 has no
problems (I haven't tried 1.40 or 1.41 (yet)):

[...]
Starting network.
add net 127.0.0.0: gateway 127.0.0.1
Configuring network interfaces:.
Starting dhclient.
Internet Software Consortium DHCP Client V3.0b2pl9
Copyright 1995-2000 Internet Software Consortium.
All rights reserved.
For info, please visit http://www.isc.org/products/DHCP

Listening on BPF/le0/08:00:2b:39:7d:a7
Sending on   BPF/le0/08:00:2b:39:7d:a7
Sending on   Socket/fallback
DHCPREQUEST on le0 to 255.255.255.255 port 67
DHCPACK from 10.2.0.1
[...]



>How-To-Repeat:
>Fix:
reverting to route.c rev 1.39 fixes the problem for me
>Release-Note:
>Audit-Trail:
>Unformatted: