Not able to set alias name for localhost in CUPS client

Issue

I would like to add an "alias" name for localhost in /etc/hosts on a system running a CUPS client and then use that alias name as a hostname to which to print. For example, I add the name cups01 to the list of names that resolve to 127.0.0.1:

# cat /etc/hosts
127.0.0.1   cups01 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6

and then I try to print to cups01, but the following error is returned:

# lpr -H cups01 -P pr4310 test.txt
lpr: Error - add '/version=1.1' to server name.

The printer pr4310 is properly defined because this command works as expected:

# lpr -H localhost -P pr4310 test.txt