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Date:      Wed, 21 Mar 2018 21:30:05 +0000
From:      Anton Shterenlikht <as@cmplx.uk>
To:        Manish Jain <jude.obscure@yandex.com>
Cc:        Anton Shterenlikht <as@cmplx.uk>, freebsd-questions@freebsd.org
Subject:   Re: how to set hostname on a cable line?
Message-ID:  <20180321213005.GA73927@jail0199.vps.exonetric.net>
In-Reply-To: <79cc198c-daa9-1cb2-020f-d11d7d3d396a@yandex.com>
References:  <201803211834.w2LIY9Jh059885@jail0199.vps.exonetric.net> <79cc198c-daa9-1cb2-020f-d11d7d3d396a@yandex.com>

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On Thu, Mar 22, 2018 at 12:47:50AM +0530, Manish Jain wrote:
> On 03/22/18 00:04, Anton Shterenlikht wrote:
> > I cannot seem to set hostname
> > correctly on a home laptop,
> > which has a wireless connection
> > to a cable router.
> > 
> > How do I do it?
> > 
> > I have
> > 
> > hostname=""
> > ifconfig_wlan0="SYNCDHCP WPA"
> > 
> > in /etc/rc.conf
> > 
> > According to rc.conf(5):
> > 
> >                   If dhclient(8) is used to set the hostname via DHCP, this
> >                   variable should be set to an empty string.
> > 
> > But I still get empty hostname after boot:
> > 
> > # hostname
> > 
> > #
> > 
> > # cat /var/db/dhclient.leases.wlan0
> > lease {
> >    interface "wlan0";
> >    fixed-address 192.168.1.104;
> >    next-server 192.168.1.1;
> >    option subnet-mask 255.255.255.0;
> >    option routers 192.168.1.1;
> >    option domain-name-servers 194.168.4.100,194.168.8.100;
> >    option host-name "00215c5068c3";
> >    option domain-name "cable.virginmedia.net";
> >    option dhcp-lease-time 86400;
> >    option dhcp-message-type 5;
> >    option dhcp-server-identifier 192.168.1.1;
> >    option dhcp-renewal-time 43200;
> >    option dhcp-rebinding-time 75600;
> >    renew 4 2018/3/22 07:21:14;
> >    rebind 4 2018/3/22 16:21:14;
> >    expire 4 2018/3/22 19:21:14;
> > }
> > 
> > # cat /etc/resolv.conf
> > # Generated by resolvconf
> > search cable.virginmedia.net
> > nameserver 194.168.4.100
> > nameserver 194.168.8.100
> > 
> > 
> > Does that help me?
> > 
> > I cannot run MPI programs without having a correct
> > hostname, i.e. I should be able to do ssh `hostname`.
> > 
> > What am I missing?
> > 
> > Thanks
> > 
> > Anton
> 
> 
> Have you tried setting the hostname with 'bsdconfig networking' ?

Maybe I didn't explain myself well.

I need a fully qualified domain name (FQDM).

Perhaps I just cannot have one from a wireless router
at home?

Anton



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