How to add a "blackhole" or "unreachable" or "prohibit" route to NetworkManager?
Issue
- How to add a "blackhole" or "unreachable" or "prohibit" route to NetworkManager?
- In
initscriptswe used route typeunreachable, how to add this to a NetworkManager connection so it persists? - Unable to configure blackhole routing in RHEL 8
- Our RHEL boxes are configured as routers and require
blackholerouting type to ensure full functionality. NetworkManager does not support this routing type, even though the kernel andiproute2do.
Environment
- Red Hat Enterprise Linux 7 or later
- NetworkManager
- Black hole, unrechable, or prohibited IP routing
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