Bug or Feature: multiple static ip entries in DHCP Static Mappings

chris1284

Hi,

at this time i am filling static ip entries in DHCP Static Mappings.
Is it normal that i can enter the same ip multiple times in this list? Should not the gui prevent from entering this fail configuration? I did so because of a careless mistake and was wondering that this is possible.

thx christian

johnpoz

@chris1284 you mean you set say 192.168.9.100 for aa:bb:cc:00:00:01, and you also set 192.168.9.100 for aa:bb:cc:00:00:02

While that is prob not a very good setup, the first mac to get the ip should win in such a setup. It shouldn't hand out a duplicate if the first mac/IP is active.

Some sort of warning that your doing that might not be a bad idea.

chris1284

@johnpoz said in Bug or Feature: multiple static ip entries in DHCP Static Mappings:

you mean you set say 192.168.9.100 for aa:bb:cc:00:00:01, and you also set 192.168.9.100 for aa:bb:cc:00:00:02

exactly what i mean. for dupplicated mac there is a check

johnpoz

@chris1284 well yeah in that scenario - which one does it get?

But with duplicate IP, the first mac to ask should get it. As long as the other one is not using it currently

chris1284

@johnpoz
they are switching, that's my observation:

devices1 -> request -> gets ip
device2 comes up -> request -> gets ip
devices1 -> request -> gets ip....

if both are online both, the last device that requested an ip gets ip

johnpoz

@chris1284 so your saying it hands out a duplicate IP?

Did you disable the ping check, does the device not answer ping?

The way it should work, is if someone has it - and 2nd guy comes in - the dhcp server should ping - if there is an answer for that IP then it shouldn't hand it out to the 2nd guy..

chris1284

@johnpoz The ping check is enabled

johnpoz

@chris1284 when I get a chance I will try and duplicate this.