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EVPN AnyCast IRB Gateway DHCP Relay

Environment is IOS XR, NCS 540 and 55A2 PE routers.  I'm having issues with a DHCP server providing offers to ONT's and VDSL modems in a new SR EVPN environment that is using AnyCast IRB GW.  I have DHCP configured insert the VPN information inside of the DHCP request.  We have Calix OLT's downstream from the NCS routers that also insert option 82 information, this needs to be preserved, so, it is encapsulated.  It is my understanding that the DHCP server must support RFC 6607 for this to work correctly.  We are having a difficult time getting a DHCP server configuration that will work correctly.  Can somebody provide a example DHCPD config that will support what we are looking for?  The following is what we are using for DHCP relay config:

 

profile DHCP-RELAY relay

helper-address vrf CPE-MGMT 20.20.20.20 giaddr 10.1.1.1
relay information option vpn
relay information option
relay information policy encapsulate
relay information option vpn-mode rfc
relay information option allow-untrusted
!

 

 

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