Re: No DHCP server found (stable/12 & stable/13)

From: Kevin Oberman <>
Date: Sat, 23 Apr 2022 05:43:15 UTC
On Fri, Apr 22, 2022 at 12:13 AM David Wolfskill <>

> (This may also apply to head; I haven't tested it recently, and testing
> is a little awkward for me just now. -- dhw)
> As I type, I am 9 time zones east of home.  The laptop I am using is
> running:
> FreeBSD localhost 13.1-STABLE FreeBSD 13.1-STABLE #468
> stable/13-n250522-48a5e3fc6568: Wed Apr 20 05:25:39 PDT 2022
> amd64 1301501 1301501
> I have seen an apparently-similar set of symptoms on a different laptop
> (that I use for the bulk of my day-to-day activities when I am not
> wandering about (e.g., in different time zones)); it was running:
> FreeBSD 12.3-STABLE #1236 stable/12-n235174-879a6b7b628: Tue Apr 19
> 03:32:12 PDT 2022
> amd64 1203507 1203507
> when I last observed the issue.
> In each case, I have no problems associating (if using wireless) and
> acquiring a DHCP lease at home (where the DHCP server is
> net/isc-dhcp44-server (isc-dhcp44-server-4.4.2P1_1), currently running:
> FreeBSD 12.3-STABLE #59 stable/12-n235169-6def5bc64cb: Fri Apr 15 03:31:41
> PDT 2022
> amd64 1203507 1203507
> ), nor do I see the problem if I have either laptop associate to my
> phone's "hotspot".
> But at the hotel where I am no, as well as on the commuter shuttle bus
> at work, and a hotel in Los Angeles back in March, I found that dhclient
> on the laptop would issue DHCPDISCOVER (repeatedly)... and utterly fail
> to recognize any response from a DHCP server.
> In searching for solutions, I found a thread, " dhclient does not decode
> 802.1q-encapsulated replies #114 " at
> - I have no idea if it's
> related to what I am seeing.  (While I don't use OPNSense, I do use
> ipfw (and have, since around 1999).  I am not at all familiar with VLANs
> -- I don't use them in my networks.)
> I do use an /etc/dhclient.conf; here are the non-comment lines:
> | send host-name "";
> |
> | request ntp-servers, smtp-server, routers, domain-name-servers,
> domain-search, domain-name, subnet-mask, broadcast-address;
> though the mtime on that file shows Aug 15 04:40:08 2018 (at which point
> I know the shuttle bus DHCP was working for me).
> As you may be able to discern, while I do have connectivity enough
> to send/receive email, my opportunities for checking and testing
> are likely to be quite limited -- more so in a couple of days, once
> the cycling tour actually gets under way.
> Peace,
> david
> --
> David H. Wolfskill                    
> V. Putin does not need "negotiations" to stop his own senseless war.
> See for my public key.

For the past year (maybe longer as I did not travel during the pandemic) I
have been unable to get an address assignment at any Marriott family hotel.
This will get worse as I will be in Hawaii for two weeks next month. I
talked to tech support, in one case to a Linux user, and they were baffled.
I'd love to get this resolved.

I have done traffic capture and see my DISCOVER packets going out, but no

I have no issues with getting an address assignment elsewhere, so it looks
like it is probably tied to hardware or implementation by whatever company
Marriott is using.

Kevin Oberman, Part time kid herder and retired Network Engineer
PGP Fingerprint: D03FB98AFA78E3B78C1694B318AB39EF1B055683