Tuesday, March 10, 2020

pfSense sending ARP request before sending DHCP ACK

I'm writing my VNFs and noticed that pfSense is broadcasting an ACK requesting the yet-to-be-assigned IP address before the host has even received DHCP ACK. What happens is the ARP request gets ignored by my VNFs because I don't have received the DHCP ACK and don't have my IP address yet...

Is it normal? What is the best way to deal with it? I was thinking about broadcasting a gratuitous ARP so the pfSense (and other hosts in the subnet) updates it's ARP tables.



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