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CentOS6 minimal server
# ip route get 127.0.0.5
local 127.0.0.5 dev lo src 127.0.0.5
cache <local> mtu 65520 hoplimit 64
CentOS7 minimal server
# ip route get 127.0.0.5
local 127.0.0.5 dev lo src 127.0.0.1
cache <local>
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CentOS6 minimal server
# ip route get 127.0.0.5
local 127.0.0.5 dev lo src 127.0.0.5
cache <local> mtu 65520 hoplimit 64
CentOS7 minimal server
# ip route get 127.0.0.5
local 127.0.0.5 dev lo src 127.0.0.1
cache <local>
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CentOS 6# ip route get 127.0.0.5
local 127.0.0.5 dev lo src 127.0.0.5
cache <local> mtu 65520 hoplimit 64
CentOS 7# ip route get 127.0.0.5
local 127.0.0.5 dev lo src 127.0.0.1
cache <local>
CentOS 8# ip route get 127.0.0.5
local 127.0.0.5 dev lo src 127.0.0.1 uid 1000
cache <local>
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broadcast 127.0.0.0 dev lo proto kernel scope link src 127.0.0.1
local 127.0.0.1 dev lo proto kernel scope host src 127.0.0.1
local 127.0.0.0/8 dev lo proto kernel scope host src 127.0.0.1
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[root@localhost ~]# cat /etc/redhat-release
CentOS release 6.9 (Final)
[root@localhost ~]# uname -a
Linux localhost.localdomain 2.6.32-696.el6.i686 #1 SMP Tue Mar 21 18:53:30 UTC 2017 i686 i686 i386 GNU/Linux
[root@localhost ~]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether ##:##:##:##:##:## brd ff:ff:ff:ff:ff:ff
inet ##.##.##.##/24 brd ##.##.##.## scope global eth0
inet6 ####::###:####:####:####/64 scope link
valid_lft forever preferred_lft forever
[root@localhost ~]#ip route get 127.0.0.5
local 127.0.0.5 dev lo src 127.0.0.5
cache <local> mtu 65520 hoplimit 64
[root@localhost ~]#
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[root@localhost ~]# cat /etc/redhat-release
CentOS Linux release 7.4.1708 (Core)
[root@localhost ~]# uname -a
Linux localhost.localdomain 3.10.0-693.el7.x86_64 #1 SMP Tue Aug 22 21:09:27 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
[root@localhost ~]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN qlen 1
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: enp0s3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether ##:##:##:##:##:## brd ff:ff:ff:ff:ff:ff
inet ##.##.##.##/24 brd ##.##.##.## scope global enp0s3
valid_lft forever preferred_lft forever
inet6 ####::###:####:####:####/64 scope link
valid_lft forever preferred_lft forever
[root@localhost ~]#ip route get 127.0.0.5
local 127.0.0.5 dev lo src 127.0.0.1
cache <local>
[root@localhost ~]#