In article <Pine.LNX.3.95.980421001700.3979H-100000@devel.dbd.com>, Mark Whitis <whitis@dbd.com> wrote:

Even then, your netmask should have 1s on the left and right (i.e. 255.255.0.255) for a /16 subnetted at /8.

Discontiguous netmasks has been deprecated or unsupported for a very long time. -- Shields, CrossLink.