Comment 4 for bug 1668145

Hi, I would like to follow up.

Source: https://tools.ietf.org/html/rfc3442

  Local Subnet Routes

     In some cases more than one IP subnet may be configured on a link.
     In such cases, a host whose IP address is in one IP subnet in the
     link could communicate directly with a host whose IP address is in a
     different IP subnet on the same link. In cases where a client is
     being assigned an IP address on an IP subnet on such a link, for each
     IP subnet in the link other than the IP subnet on which the client
     has been assigned the DHCP server MAY be configured to specify a
     router IP address of 0.0.0.0.

The rfc says, quote:
  "the DHCP server MAY be configured to specify a router IP address of 0.0.0.0."

I would like to see that _MAY be_ available when I use the Linux DHCP agent.