.B .noip
in the calling user's home directory, as determined by the
.B HOME
-environment, or, failing that, looking up the
-.I real
-(not effective) user id in the password database. However, if the
-environment variable
+environment, or, failing that, looking up the effective user id in the
+password database. However, if the environment variable
.B NOIP_CONFIG
is set, then the file it names is read instead (assuming it exists; if
it doesn't, no configuration is read).