dhcpd doesn't acknowledge dhcp requests

Sean McMurray sean at mvtel.com
Fri Jun 12 20:19:57 UTC 2015


I finally got it worked out. I'll document what worked for me here in 
case it might be helpful to somebody in the future.

In order for dhcpd to recognize and respond to dhcp requests on a vlan, 
I had to do two things:
1. Specifically enumerate the interfaces as dhcpd command line arguments
     In my case, dhcpd em2.112
2. Set the REORDER HEADER flag
     This can be done with vconfig like so: vconfig set_flag em2.112 1 1
     I made it permanent by adding it to the ifcfg script on my Redhat 
host using the REORDER_HDR=1 option

After these two changes, the dhcpd daemon began responding to dhcp 
requests on vlan 112.



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