Vendor option being deleted
John Hascall
john at iastate.edu
Tue Oct 16 12:05:27 UTC 2012
Does changing "58" to something else, say "1" make the error go away
(other than now sending the wrong code)? If so that would be a pretty
good clue that you are on the right track.
John
> Can anyone verify this is a bug?
>
> During a recent migration from a much older DHCPD server to one based upon =
> DHCP-4.1-ESV-R6, it was noticed that a vendor option wasn't functioning, an=
> d the log file reported that the option was being ignored during the dhcpd =
> service startup. I don't own the server, so I can't easily provide the ent=
> ire log file or conf file. Removing the line "option AlcatelA4400.VlanID 3=
> 5;" will make the warning message go away.
>
>
> Log message:
> Internet Systems Consortium DHCP Server 4.1-ESV-R6
> Copyright 2004-2012 Internet Systems Consortium.
> All rights reserved.
> For info, please visit https://www.isc.org/software/dhcp/
> WARNING: server ignoring option VlanID in configuration file.
> Wrote 0 class decls to leases file.
>
>
> Related lines from the dhcpd.conf file:
> option space AlcatelA4400;
> option AlcatelA4400.VlanID code 58 =3D unsigned integer 16;
>
> class "alcatel_ipphone"
> {
> match if option vendor-class-identifier =3D "alcatel.tsc-ip.0" or optio=
> n vendor-class-identifier =3D "alcatel.noe.0";
> option AlcatelA4400.VlanID 35;
> }
>
>
>
>
> I looked through the source code, and I think I found the cause. The optio=
> n code for DHO_DHCP_RENEWAL_TIME and the vendor code are both 58.
>
> >From dhcp-4.1-ESV-R7/server/confpars.c
> Line 757:
> /*
> * If the configuration attempts to define on option
> * that we ignore, then warn about it now.
> *
> * In DHCPv4 we do not use dhcp-renewal-time or
> * dhcp-rebinding-time, but we use these in DHCPv6.
> *
> * XXX: We may want to include a "blacklist" of
> * options we ignore in the future, as a table.
> */
> if ((option->code =3D=3D DHO_DHCP_LEASE_TIME) ||
> ((local_family !=3D AF_INET6) &&
> ((option->code =3D=3D DHO_DHCP_RENEWAL_TIME) ||
> (option->code =3D=3D DHO_DHCP_REBINDING_TIME))))
> {
> log_error("WARNING: server ignoring option %s "
> "in configuration=
> file.",
> option->name);
> }
>
>
>
> >From dhcp-4.1-ESV-R7/includes/dhcp.h
> Line 152:
> #define DHO_DHCP_RENEWAL_TIME 58
>
>
>
> >From dhcp-4.1-ESV-R7/server/dhcp.c
> Line 1215:
> /*
> * Remove any time options, per section 3.4 RFC 2131
> */
> delete_option(&dhcp_universe, options, DHO_DHCP_LEASE_TIME)=
> ;
> delete_option(&dhcp_universe, options, DHO_DHCP_RENEWAL_TIM=
> E);
> delete_option(&dhcp_universe, options, DHO_DHCP_REBINDING_T=
> IME);
>
> /* Set up the option buffer... */
>
>
> Thanks,
> Scott Wedekind
>
>
> --_000_878BD3F49A671049A8D10D2929CA83CD11462BB8TORMBXW01blueca_
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> <body lang=3D"EN-US" link=3D"blue" vlink=3D"purple">
> <div class=3D"WordSection1">
> <p class=3D"MsoNormal">Can anyone verify this is a bug? <o:p></o:p></=
> p>
> <p class=3D"MsoNormal"><o:p> </o:p></p>
> <p class=3D"MsoNormal">During a recent migration from a much older DHCPD se=
> rver to one based upon DHCP-4.1-ESV-R6, it was noticed that a vendor option=
> wasn’t functioning, and the log file reported that the option was be=
> ing ignored during the dhcpd service startup.
> I don’t own the server, so I can’t easily provide the entire l=
> og file or conf file. Removing the line “option AlcatelA4400.Vl=
> anID 35;” will make the warning message go away.<o:p></o:p></p>
> <p class=3D"MsoNormal"><o:p> </o:p></p>
> <div style=3D"mso-element:para-border-div;border:none;border-bottom:solid w=
> indowtext 1.0pt;padding:0in 0in 1.0pt 0in">
> <p class=3D"MsoNormal" style=3D"border:none;padding:0in"><o:p> </o:p><=
> /p>
> <p class=3D"MsoNormal" style=3D"border:none;padding:0in">Log message:<o:p><=
> /o:p></p>
> </div>
> <p class=3D"MsoNormal">Internet Systems Consortium DHCP Server 4.1-ESV-R6<o=
> :p></o:p></p>
> <p class=3D"MsoNormal">Copyright 2004-2012 Internet Systems Consortium.<o:p=
> ></o:p></p>
> <p class=3D"MsoNormal">All rights reserved.<o:p></o:p></p>
> <p class=3D"MsoNormal">For info, please visit https://www.isc.org/software/=
> dhcp/<o:p></o:p></p>
> <p class=3D"MsoNormal">WARNING: server ignoring option VlanID in configurat=
> ion file.<o:p></o:p></p>
> <div style=3D"mso-element:para-border-div;border:none;border-bottom:solid w=
> indowtext 1.0pt;padding:0in 0in 1.0pt 0in">
> <p class=3D"MsoNormal" style=3D"border:none;padding:0in">Wrote 0 class decl=
> s to leases file.<o:p></o:p></p>
> </div>
> <p class=3D"MsoNormal"><o:p> </o:p></p>
> <p class=3D"MsoNormal"><o:p> </o:p></p>
> <div style=3D"mso-element:para-border-div;border:none;border-bottom:solid w=
> indowtext 1.0pt;padding:0in 0in 1.0pt 0in">
> <p class=3D"MsoNormal" style=3D"border:none;padding:0in">Related lines from=
> the dhcpd.conf file:<o:p></o:p></p>
> </div>
> <p class=3D"MsoNormal">option space AlcatelA4400;<o:p></o:p></p>
> <p class=3D"MsoNormal">option AlcatelA4400.VlanID code 58 =3D unsigned inte=
> ger 16;<o:p></o:p></p>
> <p class=3D"MsoNormal"><o:p> </o:p></p>
> <p class=3D"MsoNormal">class "alcatel_ipphone"<o:p></o:p></p>
> <p class=3D"MsoNormal">{<o:p></o:p></p>
> <p class=3D"MsoNormal"> match if option vendor-class-iden=
> tifier =3D "alcatel.tsc-ip.0" or option vendor-class-identifier =
> =3D "alcatel.noe.0";<o:p></o:p></p>
> <p class=3D"MsoNormal"> option AlcatelA4400.VlanID 35;<o:=
> p></o:p></p>
> <div style=3D"mso-element:para-border-div;border:none;border-bottom:solid w=
> indowtext 1.0pt;padding:0in 0in 1.0pt 0in">
> <p class=3D"MsoNormal" style=3D"border:none;padding:0in">}<o:p></o:p></p>
> </div>
> <p class=3D"MsoNormal"><o:p> </o:p></p>
> <p class=3D"MsoNormal"><o:p> </o:p></p>
> <p class=3D"MsoNormal"><o:p> </o:p></p>
> <p class=3D"MsoNormal"><o:p> </o:p></p>
> <p class=3D"MsoNormal">I looked through the source code, and I think I foun=
> d the cause. The option code for DHO_DHCP_RENEWAL_TIME and the vendor=
> code are both 58.<o:p></o:p></p>
> <p class=3D"MsoNormal"><o:p> </o:p></p>
> <p class=3D"MsoNormal">From dhcp-4.1-ESV-R7/server/confpars.c<o:p></o:p></p=
> >
> <p class=3D"MsoNormal">Line 757:<o:p></o:p></p>
> <p class=3D"MsoNormal">/*<o:p></o:p></p>
> <p class=3D"MsoNormal">* If the configuration attempts to define on option<=
> o:p></o:p></p>
> <p class=3D"MsoNormal">* that we ignore, then warn about it now.<o:p></o:p>=
> </p>
> <p class=3D"MsoNormal">*<o:p></o:p></p>
> <p class=3D"MsoNormal">* In DHCPv4 we do not use dhcp-renewal-time or<o:p><=
> /o:p></p>
> <p class=3D"MsoNormal">* dhcp-rebinding-time, but we use these in DHCPv6.<o=
> :p></o:p></p>
> <p class=3D"MsoNormal">*<o:p></o:p></p>
> <p class=3D"MsoNormal">* XXX: We may want to include a "blacklist"=
> ; of <o:p></o:p></p>
> <p class=3D"MsoNormal"> * options we ign=
> ore in the future, as a table.<o:p></o:p></p>
> <p class=3D"MsoNormal">*/<o:p></o:p></p>
> <p class=3D"MsoNormal">if ((option->code =3D=3D DHO_DHCP_LEASE_TIME) ||<=
> o:p></o:p></p>
> <p class=3D"MsoNormal" style=3D"text-indent:.5in">((local_family !=3D AF_IN=
> ET6) && <o:p>
> </o:p></p>
> <p class=3D"MsoNormal"> &nbs=
> p; ((option->code =3D=3D=
> DHO_DHCP_RENEWAL_TIME) ||<o:p></o:p></p>
> <p class=3D"MsoNormal"> &nbs=
> p; (option->code =3D=3D=
> DHO_DHCP_REBINDING_TIME))))<o:p></o:p></p>
> <p class=3D"MsoNormal"> &nbs=
> p; {<o:p></o:p></p>
> <p class=3D"MsoNormal"> &nbs=
> p; log_e=
> rror("WARNING: server ignoring option %s "<o:p></o:p></p>
> <p class=3D"MsoNormal"> &nbs=
> p; =
> &nb=
> sp; =
> "in configurat=
> ion file.",<o:p></o:p></p>
> <p class=3D"MsoNormal"> &nbs=
> p; &=
> nbsp; &nbs=
> p; option->name);<o:p></o:p></=
> p>
> <p class=3D"MsoNormal"> &nbs=
> p; &=
> nbsp; &nbs=
> p; &=
> nbsp; }<o:p></o:p></p>
> <p class=3D"MsoNormal"><o:p> </o:p></p>
> <p class=3D"MsoNormal"><o:p> </o:p></p>
> <p class=3D"MsoNormal"><o:p> </o:p></p>
> <p class=3D"MsoNormal">From dhcp-4.1-ESV-R7/includes/dhcp.h<o:p></o:p></p>
> <p class=3D"MsoNormal">Line 152: <o:p></o:p></p>
> <p class=3D"MsoNormal">#define DHO_DHCP_RENEWAL_TIME  =
> ; &n=
> bsp;  =
> ; 58<o:p></o:p></p>
> <p class=3D"MsoNormal"><o:p> </o:p></p>
> <p class=3D"MsoNormal"><o:p> </o:p></p>
> <p class=3D"MsoNormal"><o:p> </o:p></p>
> <p class=3D"MsoNormal">From dhcp-4.1-ESV-R7/server/dhcp.c<o:p></o:p></p>
> <p class=3D"MsoNormal">Line 1215: <o:p></o:p></p>
> <p class=3D"MsoNormal"> &nbs=
> p; /*<o:p></o:p></p>
> <p class=3D"MsoNormal"> &nbs=
> p; * Remove any time options, per secti=
> on 3.4 RFC 2131<o:p></o:p></p>
> <p class=3D"MsoNormal"> &nbs=
> p; */<o:p></o:p></p>
> <p class=3D"MsoNormal"> &nbs=
> p; delete_option(&dhcp_universe, op=
> tions, DHO_DHCP_LEASE_TIME);<o:p></o:p></p>
> <p class=3D"MsoNormal"> &nbs=
> p; delete_option(&dhcp_universe, op=
> tions, DHO_DHCP_RENEWAL_TIME);<o:p></o:p></p>
> <p class=3D"MsoNormal"> &nbs=
> p; delete_option(&dhcp_universe, op=
> tions, DHO_DHCP_REBINDING_TIME);<o:p></o:p></p>
> <p class=3D"MsoNormal"><o:p> </o:p></p>
> <p class=3D"MsoNormal"> &nbs=
> p; /* Set up the option buffer... */<o:=
> p></o:p></p>
> <p class=3D"MsoNormal"><o:p> </o:p></p>
> <p class=3D"MsoNormal"><o:p> </o:p></p>
> <p class=3D"MsoNormal">Thanks,<o:p></o:p></p>
> <p class=3D"MsoNormal" style=3D"margin-bottom:6.0pt"><span style=3D"font-si=
> ze:10.0pt">Scott Wedekind<br>
> </span><span style=3D"font-size:10.0pt"><o:p></o:p></span></p>
> <p class=3D"MsoNormal"><o:p> </o:p></p>
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