Incorrect DHCP Subnet Mask

After all these years..... I have a customer that has a SBS 2011 server that is a DHCP server for their network. their subnet is 172.18.2.X with a subnet of 255.255.255.0 but..... what I look at a couple of workstations that get their IP via DHCP their subnet mask is 255.255.0.0

There is no place in the DHCP scope options to set the subnet mask is there? How do you set it?
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LockDown32OwnerAsked:
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Nadav SolomonCommented:
You configure the subnet mask when you create the scope, since the default gateway should be in the same class c mask as the workstations ip's (as long as you dont give ip's outside of it) there should be no problem.
If you do want to fix it just delete and recreate the scope.

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Mal OsborneAlpha GeekCommented:
This needs to be fixed, IP broadcasts are broken which can cause some really weird network problems. You could either recreate the DHCP scope, or change the settings on the SBS box to match.
Nadav SolomonCommented:
Glad I could help, thanks for the feedback.
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