Form elements alternate between being hidden fields and being input fields.
During validation I sporadically get the following error:
Validation error in hidden form element: 'invalid ip address' on element 'ip_address'.
while executing
"error "Validation error in hidden form element: '[set $id:error($element(id))]' on element '$element(id)'.""
(procedure "template::form::render" line 85)
invoked from within
"template::form::render network { }"