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Re: kern/53329: netboot over nfs broken

The following reply was made to PR kern/53329; it has been noted by GNATS.

From: Julian Coleman <>
Subject: Re: kern/53329: netboot over nfs broken
Date: Mon, 4 Jun 2018 15:21:43 +0200

 >  - 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:
 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.)

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