loopback localhost
IBM® Developer z/OS® and z/OS Debugger use the TCP/IP loopback
and TCP/IP localhost definitions. Communication will fail if these
definitions are set up using different TCP/IP addresses. To avoid
address resolution issues, define one of the following lines in the
local host table, as described in section "Configuring the local host
table" of the Communications Server: IP Configuration Guide (SC31-8775).
127.0.0.1 loopback localhost # for IPv4 only::1 loopback localhost # for IPv6 only
Note: Ensure that the definition is valid for both the MVS™ and z/OS UNIX search
orders.
Refer to Communications Server: IP Configuration
Guide (SC31-8775) and Communications Server: IP Configuration
Reference (SC31-8776) for additional information on TCP/IP
configuration. The IBM Explorer
for z/OS Host Reference Guide (SC27-8438)
also provides related information in the "Setting up TCP/IP" chapter.