What is the difference between "all", "default" and a specific device in a sysctl parameter?
Issue
- What are the differences in the specification of
all
,default
or a specific device (eth0
) in somesysctl
parameters, e.g.:
net.ipv4.conf.eth0.rp_filter 0
vs
net.ipv4.conf.all.rp_filter 0
- Setting a
sysctl
parameter on a specific interface.
Environment
- Red Hat Enterprise Linux(RHEL) 5
- Red Hat Enterprise Linux(RHEL) 6
- Red Hat Enterprise Linux(RHEL) 7
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