The /etc/hosts file is missing the hostname :
# more /etc/hosts 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
On Red Hat Enterprise Linux 5 the /etc/hosts file is :
$ more /etc/hosts # Do not remove the following line, or various programs # that require network functionality will fail. 127.0.0.1 localhost.localdomain localhost ::1 localhost6.localdomain6 localhost6 10.211.50.34 vm.it.domain.com vm-it-domain
Red Hat Enterprise Linux 6.1 or later
Red Hat Enterprise Linux 6.0 (*1)
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