dhcpcd-discuss

Correct format for DHCP Options

Mark Gannon

Tue Dec 31 15:37:16 2019

Hello,

I'm trying to get my Ubuntu 18 box to connect directly to my ATT Uverse 
account using dhcpcd.  dhcpcd --version returns:

dhcpcd 6.11.5
Copyright (c) 2006-2016 Roy Marples
Compiled in features: INET IPv4LL INET6 DHCPv6 AUTH


 Everything works fine for IPv4, but while I receive an IPv6 address, it 
doesn't cross the router.  Per the instructions for Openbsd at https://
jcs.org/2019/03/21/uverse, I need to specify a DUID.   I could use some 
assistance configuring dhcpcd to replicate what a successful DHCP request from 
the actually router looks like.  A successful DHCP packet looks like the one 
depicted in this Wireshark screen capture: https://postimg.cc/LJ5NWbwY.  What 
would example entries in dhcpcd.conf look like in order to recreate the same 
fields as shown in the image under Client Identifier and Vendor-specific 
Information?

Thanks in advance for your assistance,

Mark Gannon 

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