entering IP alias in the virtual IP section

[nj44451]

Been using opnsense since the  version 17.* days and In prior versions I had no issue adding and IP alias from WAN address block under the virtual IP setting.

Now when I enter one it flags that IP is invalid.  I can export the config file and add or edit manually but was wondering if there is something I am doing wrong when I try to use the GUI.


Thanks,

Trent