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

On Fri, Apr 22, 2022 at 12:13 AM David Wolfskill <david@catwhisker.org>
wrote:

> (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
>  root@g1-48.catwhisker.org:/common/S3/obj/usr/src/amd64.amd64/sys/CANARY
> 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     root@g1-70.catwhisker.org:/common/S1/obj/usr/src/amd64.amd64/sys/CANARY
> 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     root@freebeast.catwhisker.org:/common/S1/obj/usr/src/amd64.amd64/sys/ALBERT
> 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
> https://github.com/opnsense/src/issues/114 - 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                              david@catwhisker.org
> V. Putin does not need "negotiations" to stop his own senseless war.
>
> See https://www.catwhisker.org/~david/publickey.gpg 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
responses.

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
E-mail: rkoberman@gmail.com
PGP Fingerprint: D03FB98AFA78E3B78C1694B318AB39EF1B055683