Linux DHCP sending wrong parameters in offer packet

[Rudy Zijlstra]

Hi

Without an (anomymised) version of your config file not much usefull can 
be said...

Cheers

Rudy

On 25.01.19 13:41, Gaikwad Yogesh wrote:
>
> Hi,
>
> There is issue that linux DHCP is sending wrong parameters while 
> sending offer packet for Cisco AP’s in one of our office locations.
>
> I have taken packet captures on the DHCP server side.
>
> As you can see in below packet capture there is DHCP DISCOVER message 
> from Cisco AP requesting for IP and other parameters.
>
> Then in DHCP offer packet, it offers IP from correct subnet, but with 
> wrong router IP, subnet mask and broadcast address.
>
> Basically, my observation is that it is giving wrong parameters in 
> offer from the topmost subnet (as linux works from top to bottom 
> approach) that has cisco option 43 configured. If I remove the Cisco 
> option 43 from that subnet then it provides parameters from next 
> subnet which has the Cisco option 43 in it.
>
> The correct subnet from which I am expecting that the AP should get 
> all its parameters is configured at the end of the DHCP conf file.
>
> *DHCP DISCOVER PACKET*
>
> **
>
> *DHCP OFFER PACKET*
>
> Best regards,
>
> *Yogesh Gaikwad*, Technical Architect - TECA Network
>
> *Tieto Corporation, TSM*
>
> email Yogesh.Gaikwad at tieto.com <mailto:Yogesh.Gaikwad at tieto.com>, 
> direct +91 (0)2067303120
>
> Wing 1, Cluster D, EON Free Zone, MIDC Kharadi Knowledge Park, Pune - 
> 411 014, India
>
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>
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