RHEL: name resolution fails with some commands, like telnet but some commands, like ping succeed
Issue
- ping works
# ping A.B.C.com
PING A.B.C.com (10.0.0.31) 56(84) bytes of data.
. . .
- telnet fails
# telnet A.B.C.com 389
telnet: A.B.C.com: Name or service not known
#
Environment
- Red Hat Enterprise Linux
- unknown DNS server
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