svn commit: r222143 - in head/sys: net netinet netinet6

[Oleksandr Tymoshenko]

On 20/05/2011 12:12 PM, Qing Li wrote:
> Author: qingli
> Date: Fri May 20 19:12:20 2011
> New Revision: 222143
> URL: http://svn.freebsd.org/changeset/base/222143
>
> Log:
>    The statically configured (permanent) ARP entries are removed when an
>    interface is brought down, even though the interface address is still
>    valid. This patch maintains the permanent ARP entries as long as the
>    interface address (having the same prefix as that of the ARP entries)
>    is valid.
>
>    Reviewed by:	delphij
>    MFC after:	5 days

This commit breaks netboot with NFS root:

bootpc_init: wired to interface 'nlge1'
nlge1: [10Mbps]
Sending DHCP Discover packet from interface nlge1 (00:0f:30:00:20:4f)
nlge1: [1000Mbps]
nlge1: link state changed to UP
Received DHCP Offer packet on nlge1 from 192.168.5.1 (accepted) (no root 
path)
Sending DHCP Request packet from interface nlge1 (00:0f:30:00:20:4f)
Received DHCP Ack packet on nlge1 from 192.168.5.1 (accepted) (got root 
path)
nlge1 at 192.168.5.32 server 192.168.5.1 server name zoo.freebsd.org 
boot file /zoo/gonzo/lama1/boot/kernel/kernel
subnet mask 255.255.255.0 root_server 192.168.5.1 rootfs 
/zoo/gonzo/lama1 rootopts nolockd
Adjusted interface nlge1
Updating packet distribution for SMP
Trying to mount root from nfs: []...
nlge1: [1000Mbps]
panic: nfs_mountroot: SIOCAIFADDR: 17
cpuid = 1
KDB: enter: panic
[ thread pid 1 tid 100001 ]
Stopped at      kdb_enter+0x8c: lui     at,0x0
db>