An exception is being thrown when removing an address. The exception indicates the resolver file could not be removed, but the resolver file in fact is removed:
$ ll /etc/resolver/
total 32
-rw-r--r-- 1 lightster staff 21 Dec 10 23:28 m.com
-rw-r--r-- 1 lightster staff 21 Dec 10 23:28 v.com
-rw-r--r-- 1 lightster staff 21 Dec 14 00:27 y.com
-rw-r--r-- 1 lightster staff 21 Dec 12 22:08 z.com
$ dnsmasq-mgmt address:remove z.com
[Exception]
Could not remove resolver file: '/etc/resolver/z.com'
address:remove hostname
$ ll /etc/resolver/
total 24
-rw-r--r-- 1 lightster staff 21 Dec 10 23:28 m.com
-rw-r--r-- 1 lightster staff 21 Dec 10 23:28 v.com
-rw-r--r-- 1 lightster staff 21 Dec 14 00:27 y.com
An exception is being thrown when removing an address. The exception indicates the resolver file could not be removed, but the resolver file in fact is removed: