Infoblox’s global team of threat hunters uncovers a DNS operation with the ability to bypass traditional security measures and control the Great Firewall of China. Read about “Muddling Meerkat” and the many other threat actors discovered by Infoblox Threat Intel here.

NIOS DNS DHCP IPAM

Reply

wrong subnet mask - no free leases

Authority
Posts: 4
764     0

On one of our /25 subnets one of the members doesn't want to assign leases.
According to syslog the member thinks there are no free leases.

DHCPDISCOVER from xx:xx:xx:xx:xx:xx via bond0 TransID 0b847e9f: network 10.102.82.0/24: no free leases

 

If I put the DHCP range from FO association to the failing member, I do get a correct subnet mask in the syslog.

DHCPDISCOVER from xx:xx:xx:xx:xx:xx via 10.102.82.253 TransID 81555b1e: network 10.102.82.128/25: no free leases

 

So, I put the member showing the correct subnet mask as the single member for that subnet and now all clients are getting an IP.

Why is there a difference in the recognition of the subnet mask between those two members?

Showing results for 
Search instead for 
Did you mean: 

Recommended for You