[Bug 229727] On install, Broadcom chipset doesn't receive DHCPOFFER

bugzilla-noreply at freebsd.org bugzilla-noreply at freebsd.org
Thu Jul 12 14:48:19 UTC 2018


https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=229727

Rodney W. Grimes <rgrimes at FreeBSD.org> changed:

           What    |Removed                     |Added
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                 CC|                            |rgrimes at FreeBSD.org

--- Comment #1 from Rodney W. Grimes <rgrimes at FreeBSD.org> ---
This can be caused by Spanning Tree Protocol (STP) on the port that the mac
book is connected to.  If the switch is using the old standard slow STP the
port can be in a down state for longenough after carrier comes up that all
packets are lost during the DHCP process.  If you can check the switch to see
if you can either disable STP on this port, or set it to the newer standard
faststp.

If that resolves the problem then it was STP interfering, if the problem
remains then something else is occuring.

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