16 lines
674 B
Plaintext
16 lines
674 B
Plaintext
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# The Strict mode of RFC3704 Reverse Path filtering breaks some pretty
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# common and reasonable use cases.
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#
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# Notably, it makes it impossible for NetworkManager to do connectivity
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# check on a newly arriving default route (it starts with a higher metric
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# and is bumped lower if there's connectivity).
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#
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# Kernel's default is 0 (no filter), systemd configures a Loose filter since
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# commit 230450d4e4f1 ('sysctl.d: switch net.ipv4.conf.all.rp_filter from 1
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# to 2'). However, RHEL systemd package happens to default to Strict mode
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# for historic reasons. Let's override it if we're doing connectivity
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# checking.
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# Source route verification
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net.ipv4.conf.all.rp_filter = 0
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