How to clear DHCP leases on Gaia R80.10?

[Lukas_Nagy]

Hello,

is there a way to release all DHCP leases from DHCP server running on Gaia R80.10? Is it enough to remove leases from

/var/lib/dhcp.leases‍

and reset DHCP process? 

Thanks

[PhoneBoy]

I believe that is all that is required, yes.

[G_W_Albrecht · Accepted solution]

See https://community.checkpoint.com/t5/SMB-Gateways-Spark/Release-ip/m-p/127110#M5535

for how to use dhclient to send a release message !

[sloddo]

That link discusses the ability to release a DHCP WAN IP address obtained by an SMB appliance.  The question here is how to clear out leases of the DHCP server running on Gaia OS.  Is it the same solution?

[skandshus]

I think you could just edit the .wan with .eth1 or .eth1.20 if you’re in a vlan.. would be an easy test either way..

[G_W_Albrecht]

Did you test this yourself or just think it could work ? But why not use the standard linux dhclient command ?

[G_W_Albrecht]

The dhclient package is taken unchanged from RHEL 5.2, see Gaia R80.40 Hardening Specifications !

[sloddo]

Appreciate the responses, but I'm still unclear on how dhclient can release IP's that have been leased out via the DHCPD server?  I'm not talking about how to release a dhcp-assigned IP on a client.

Apologies if I'm being dense.