Re: kern/53329: netboot over nfs broken

[Julian Coleman <jdc%coris.org.uk@localhost>]

Hi,

>  - I successfully booted after increasing timeouts in
>    sys/nfs/nfs_boot.c to
 
>      7.2... nfs_boot: trying DHCP/BOOTP
>     25.9... nfs_boot: timeout...
>     30.9... nfs_boot: timeout...
>     35.9... nfs_boot: timeout...
>     40.9... nfs_boot: timeout...
>  
>    (old cisco catalyst switch)

Can you configure portfast on the switch?  I'm guessing that the switch does
not enable forwarding until spanning-tree negotiation has completed.  See:

  https://www.cisco.com/c/en/us/support/docs/switches/catalyst-6500-series-switches/10553-12.html

for more details.

If this worked previously, but fails now, then I also guess that we drop the
link now and did not in the past.  (Each time the link comes up, the cisco will
renegotiate and not enable forwarding for 30s.)

Regards,

Julian