Am 05.07.2009 21:45, schrieb Simon Kelley:
Felix Schwarz wrote:
I have the situation that I changed the ip address in /etc/ethers. However
when the client sends a DHCPREQUEST with its old address (because the lease is
still valid) dnsmasq sends a DHCPACK and renews the lease. Therefore the
client could use the ip indefinitely. Is that correct or did I misinterpreted
my logs?
What I would like to see is that /etc/ethers has precedence over the lease
file. If a new DHCPDISCOVER / DHCPREQUEST comes in, dnsmasq should check the
ethers and offer only the ip address which is written there.
That's the designed behavior: dnsmasq should send a DHCPNAK when a
client has a defined IP address and the client renews a lease for a
different address. The DHCPNAK will force the client to go through the
whole DISCOVER/REQUEST cycle.
I suspect that your problems with duplicate IP addresses in /etc/ethers
may have confused this, but if you have a clear case where it's not
working, please let me have details and I'll check it out as a possble bug.
Cheers,
Simon.
Hi Simon,
i have the same probleme here. I just plugged in the network-cable to my
VoIP-Phone (snom 360). Snom discovered for an ip-address and dnsmasq
gave it a free address in the dhcp-pool. After that, i added the
mac-address to the dhcp-host-addresses and set the ip-address to a
different one. Snom 360 allways got DHCPACK for requesting the old
ip-address. I had to delete the dhcp-lease-file-entry and restart dnsmasq.
Michael.
