Can you use DHCP to assign an address to the downstream interface used by dhcrelay?
"Vallevand, Mark K" <[email protected]> Thu, 2 Nov 2023 17:13:33 +0000
| Newsgroups | gmane.network.dhcp.isc.dhcp-client |
|---|---|
| Message-ID | <CH2PR07MB669330FB0F97463C548244BAEAA6A@CH2PR07MB6693.namprd07.prod.outlook.com> |
--===============1643560089578957511== Content-Language: en-US Content-Type: multipart/related; boundary="_004_CH2PR07MB669330FB0F97463C548244BAEAA6ACH2PR07MB6693namp_"; type="multipart/alternative" --_004_CH2PR07MB669330FB0F97463C548244BAEAA6ACH2PR07MB6693namp_ Content-Type: multipart/alternative; boundary="_000_CH2PR07MB669330FB0F97463C548244BAEAA6ACH2PR07MB6693namp_" --_000_CH2PR07MB669330FB0F97463C548244BAEAA6ACH2PR07MB6693namp_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Hello DHCP users. Using Ubuntu 22.04. I have configured dhcrelay upstream and downstream interfaces and a server = address. DHCP addresses are correctly relayed from machines on the downstream side t= o the upstream side and back. Rather than using a static address in the downstream interface, I would lik= e to assign a DHCP address using dhclient to the downstream interface. Dhcrelay does not seem to handle this case. If the origin of the request i= s the actual downstream interface, it is not relayed. Is this possible? Can I use dhclient to get an address for the downstream = interface used by dhcrelay? Thanks for any suggestions. Regards. Mark K Vallevand Unisys 651-635-7708 | [email protected]<mailto:mark.vallevand@unisy= s.com> [cid:[email protected]]<http://www.unisys.com/> --_000_CH2PR07MB669330FB0F97463C548244BAEAA6ACH2PR07MB6693namp_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable <html xmlns:v=3D"urn:schemas-microsoft-com:vml" xmlns:o=3D"urn:schemas-micr= osoft-com:office:office" xmlns:w=3D"urn:schemas-microsoft-com:office:word" = xmlns:m=3D"http://schemas.microsoft.com/office/2004/12/omml" xmlns=3D"http:= //www.w3.org/TR/REC-html40"> <head> <meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Dus-ascii"= > <meta name=3D"Generator" content=3D"Microsoft Word 15 (filtered medium)"> <!--[if !mso]><style>v\:* {behavior:url(#default#VML);} o\:* {behavior:url(#default#VML);} w\:* {behavior:url(#default#VML);} .shape {behavior:url(#default#VML);} </style><![endif]--><style><!-- /* Font Definitions */ @font-face {font-family:"Cambria Math"; panose-1:2 4 5 3 5 4 6 3 2 4;} @font-face {font-family:Calibri; panose-1:2 15 5 2 2 2 4 3 2 4;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {margin:0in; font-size:11.0pt; font-family:"Calibri",sans-serif; mso-ligatures:standardcontextual;} span.EmailStyle17 {mso-style-type:personal-compose; font-family:"Calibri",sans-serif; color:windowtext;} .MsoChpDefault {mso-style-type:export-only; font-family:"Calibri",sans-serif;} @page WordSection1 {size:8.5in 11.0in; margin:1.0in 1.0in 1.0in 1.0in;} div.WordSection1 {page:WordSection1;} --></style><!--[if gte mso 9]><xml> <o:shapedefaults v:ext=3D"edit" spidmax=3D"1026" /> </xml><![endif]--><!--[if gte mso 9]><xml> <o:shapelayout v:ext=3D"edit"> <o:idmap v:ext=3D"edit" data=3D"1" /> </o:shapelayout></xml><![endif]--> </head> <body lang=3D"EN-US" link=3D"#0563C1" vlink=3D"#954F72" style=3D"word-wrap:= break-word"> <div class=3D"WordSection1"> <p class=3D"MsoNormal">Hello DHCP users.<o:p></o:p></p> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal">Using Ubuntu 22.04.<o:p></o:p></p> <p class=3D"MsoNormal">I have configured dhcrelay upstream and downstream i= nterfaces and a server address.<o:p></o:p></p> <p class=3D"MsoNormal">DHCP addresses are correctly relayed from machines o= n the downstream side to the upstream side and back.<o:p></o:p></p> <p class=3D"MsoNormal">Rather than using a static address in the downstream= interface, I would like to assign a DHCP address using dhclient to the dow= nstream interface.<o:p></o:p></p> <p class=3D"MsoNormal">Dhcrelay does not seem to handle this case. If= the origin of the request is the actual downstream interface, it is not re= layed.<o:p></o:p></p> <p class=3D"MsoNormal">Is this possible? Can I use dhclient to get an= address for the downstream interface used by dhcrelay?<o:p></o:p></p> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal">Thanks for any suggestions.<o:p></o:p></p> <p class=3D"MsoNormal"><span style=3D"mso-ligatures:none"><o:p> </o:p>= </span></p> <p class=3D"MsoNormal"><span style=3D"mso-ligatures:none"><o:p> </o:p>= </span></p> <div style=3D"mso-element:para-border-div;border:none;border-top:solid #CCC= CCC 1.0pt;padding:4.0pt 0in 0in 0in"> <p class=3D"MsoNormal" style=3D"margin-bottom:3.0pt;border:none;padding:0in= "><span style=3D"font-family:"Arial",sans-serif;color:#444444;mso= -ligatures:none">Regards.<o:p></o:p></span></p> <p class=3D"MsoNormal" style=3D"margin-bottom:3.0pt;border:none;padding:0in= "><b><span style=3D"font-family:"Arial",sans-serif;color:#444444;= mso-ligatures:none"><o:p> </o:p></span></b></p> <p class=3D"MsoNormal" style=3D"margin-bottom:3.0pt;border:none;padding:0in= "><b><span style=3D"font-family:"Arial",sans-serif;color:#444444;= mso-ligatures:none">Mark K Vallevand</span></b><span style=3D"font-family:&= quot;Arial",sans-serif;color:#444444;mso-ligatures:none"><o:p></o:p></= span></p> </div> <p class=3D"MsoNormal" style=3D"margin-bottom:3.0pt"><span style=3D"font-si= ze:9.0pt;font-family:"Arial",sans-serif;color:#444444;mso-ligatur= es:none">Unisys 651-635-7708 | </span><span style=3D"font-size:9.0pt;font-family:"Arial",sans-se= rif;mso-ligatures:none"><a href=3D"mailto:[email protected]">mark.v= [email protected]</a><span style=3D"color:#444444"> <o:p></o:p></span></span></p> <p class=3D"MsoNormal" style=3D"margin-bottom:3.0pt"><span style=3D"font-si= ze:8.0pt;color:#2072BC;mso-ligatures:none"><o:p> </o:p></span></p> <p class=3D"MsoNormal" style=3D"margin-bottom:3.0pt"><a href=3D"http://www.= unisys.com/"><span style=3D"color:windowtext;text-decoration:none"><img bor= der=3D"0" width=3D"124" height=3D"27" style=3D"width:1.2916in;height:.2812i= n" id=3D"Picture_x0020_49" src=3D"cid:[email protected]"></spa= n></a><span style=3D"mso-ligatures:none"><o:p></o:p></span></p> <p class=3D"MsoNormal"><o:p> </o:p></p> </div> </body> </html> --_000_CH2PR07MB669330FB0F97463C548244BAEAA6ACH2PR07MB6693namp_-- --_004_CH2PR07MB669330FB0F97463C548244BAEAA6ACH2PR07MB6693namp_ Content-Type: image/png; 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