Address Reservation

> I am trying to reserve IP addresses for multiple devices that have both
> ethernet and wifi connections.

   What's stopping you?

> [...] I want to reserve 2 IP addresses for each device. Is the IP
> reserved besed on the MAC address or the host name?

   MAC address.  And each interface should have a unique MAC address, so
the wired and wireless interfaces on a device should have different MAC
addresses, allowing you to associate different IP addresses with the two
interfaces.  For example, I have a Foscam camera with these two address
reservations:

      4  10.0.0.112  cam0  C4:D6:55:34:77:6E      [wired]
      5  10.0.0.113  cam1  E8:AB:FA:11:2C:DE      [wireless]

   Define "host name".  A device can have a name, but that may have
little to do with networking.  In IP, a network interface has an address
(and may have a name).  If a device has only one network interface, then
you can easily associate a network interface name with a host name.  If
a device has multiple network interfaces, then this simple relationship
breaks down.  For networking purposes, the network interface is the
fundamental object (with its own address and name), not the device.