Re: bin/46423: dhcpcd does not send hostname to server, even if requested to do.

[Thomas Schweikle <tschweikle%googlemail.com@localhost>]

The following reply was made to PR bin/46423; it has been noted by GNATS.

From: Thomas Schweikle <tschweikle%googlemail.com@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: 
Subject: Re: bin/46423: dhcpcd does not send hostname to server, even if 
requested
 to do.
Date: Tue, 08 May 2012 16:41:03 +0200

 This is an OpenPGP/MIME signed message (RFC 2440 and 3156)
 --------------enig362411AD5C47DB1EB2925246
 Content-Type: text/plain; charset=UTF-8
 Content-Transfer-Encoding: quoted-printable
 
 Am 07.05.2012 22:20, schrieb Roy Marples:
 > The following reply was made to PR bin/46423; it has been noted by GNAT=
 S.
 >=20
 > From: Roy Marples <roy%marples.name@localhost>
 > To: <gnats-bugs%netbsd.org@localhost>
 > Cc:=20
 > Subject: Re: bin/46423: dhcpcd does not send hostname to server, even i=
 f
 >  requested to do.
 > Date: Mon, 07 May 2012 21:19:45 +0100
 >=20
 >  dhcpcd-5.1.3 on my amd64 NetBSD-5.1 server works fine
 >  Here's a tcpdump demonstrating this.
 > =20
 >  With "hostname fooey" in /etc/dhcpcd.conf
 > =20
 >  uberserver$ sudo tcpdump -i rtk0 -vvv -s 0 port bootps                =
  =20
 
 does not ;-)
 ---
 $ cat /var/lib/misc/dnsmasq.leases
 1336485899 00:0c:29:d1:98:bc 172.19.8.141 * *
 ---
 
 ---
 15:34:59.562519 IP (tos 0x10, ttl 32, id 0, offset 0, flags [none],
 proto UDP (17), length 328)
     0.0.0.0.68 > 255.255.255.255.67: [udp sum ok] BOOTP/DHCP,
 Request from 00:0c:29:d1:98:bc, length 300, xid 0xa616ae26, Flags
 [none] (0x0000)
          Client-Ethernet-Address 00:0c:29:d1:98:bc
          Vendor-rfc1048 Extensions
            Magic Cookie 0x63825363
            DHCP-Message Option 53, length 1: Discover
            Requested-IP Option 50, length 4: 172.19.8.141
            Parameter-Request Option 55, length 7:
              Subnet-Mask, BR, Time-Zone, Default-Gateway
              Domain-Name, Domain-Name-Server, Hostname
 ---
 
 Asking for Hostname, even if configured not to.
 Not handling a hostname to the server, even if configured to.
 
 ---
            END Option 255, length 0
            PAD Option 0, length 0, occurs 41
 15:34:59.598406 IP (tos 0x0, ttl 64, id 61945, offset 0, flags
 [none], proto UDP (17), length 331)
     172.19.8.1.67 > 172.19.8.141.68: [udp sum ok] BOOTP/DHCP, Reply,
 length 303, xid 0xa616ae26, Flags [none] (0x0000)
          Your-IP 172.19.8.141
          Server-IP 172.19.8.1
          Client-Ethernet-Address 00:0c:29:d1:98:bc
          file "boot/grub/i386-pc/core.0"
          Vendor-rfc1048 Extensions
            Magic Cookie 0x63825363
            DHCP-Message Option 53, length 1: Offer
            Server-ID Option 54, length 4: 172.19.8.1
            Lease-Time Option 51, length 4: 1800
            RN Option 58, length 4: 900
            RB Option 59, length 4: 1575
            Subnet-Mask Option 1, length 4: 255.255.255.0
            Domain-Name Option 15, length 9: "fritz.box"
            Domain-Name-Server Option 6, length 4: 172.19.8.1
            Default-Gateway Option 3, length 4: 172.19.8.2
            BR Option 28, length 4: 172.19.8.255
            END Option 255, length 0
 ---
 
 
 /etc/dhcpcd.conf:
 ---
 #       $NetBSD: dhcpcd.conf,v 1.1.1.1.8.3 2009/11/23 03:13:28 snj Exp $
 #
 # A sample configuration for dhcpcd.
 # See dhcpcd.conf(5) for details.
 
 # Inform the DHCP server of our hostname for DDNS.
 hostname arve
 # To share the DHCP lease across OSX and Windows a ClientID is needed.
 # Enabling this may get a different lease than the kernel DHCP client.
 # Some upstream DHCP servers may also require a ClientID, such as
 FRITZ!Box.
 #clientid
 
 # A list of options to request from the DHCP server.
 #option domain_name_servers, domain_name, domain_search, host_name
 option domain_name_servers, domain_name, domain_search
 option classless_static_routes
 # Most distributions have NTP support.
 option ntp_servers
 # Respect the network MTU.
 option interface_mtu
 # A ServerID is required by RFC2131.
 require dhcp_server_identifier
 
 # A hook script is provided to lookup the hostname if not set by the
 DHCP
 # server, but it should not be run by default.
 nohook lookup-hostname
 ---
 
 Even if the manual states dhcpcd shall be used, dhclient is started.
 After creating the neccessary configuration file, dhclient now sends
 the hostname. Looks like docs are wrong here: dhclient is default,
 not dhcpcd. Changing to dhcpcd in rc.conf makes the whole thing work
 too.
 
 
 --=20
 Thomas
 
 
 --------------enig362411AD5C47DB1EB2925246
 Content-Type: application/pgp-signature; name="signature.asc"
 Content-Description: OpenPGP digital signature
 Content-Disposition: attachment; filename="signature.asc"
 
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.11 (GNU/Linux)
 Comment: GnuPT 2.9.2
 
 iEYEARECAAYFAk+pMIUACgkQJuPdOes4UCQBzwCgnwcZGVrmcbvCEwHF5zntJugR
 VtwAn3981xxfbH+iu9szKXgQDooPjhDi
 =IU52
 -----END PGP SIGNATURE-----
 
 --------------enig362411AD5C47DB1EB2925246--