Script to run on DHCPNAK

perl-list perl-list at
Thu Jul 20 12:22:14 UTC 2017

Are the NAK and ACK coming from the same server? Can you post example log messages of the NAK and ACK and related communication? I assume this is ISC DHCP that we are speaking of and not some proprietary DHCP server? 

> I am having some issues with network gear, and while arguing with vendors about
> who's problem it really is..I noticed that my device receives a NAK before it
> receives the proper IP address from our server(when the gear comes back
> online). If I can track this down in the logs then I can look for the ACK that
> follows, login to the device and reboot it properly.

> ___
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