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nhrpd: add reference to net.ipv4.ip_forward_use_pmtu=1 thread

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Add a mailing list reference regard net.ipv4.ip_forward_use_pmtu=1.

Signed-off-by: Reuben Dowle <reuben.dowle@4rf.com>
This commit is contained in:
Timo Teräs 2020-07-19 18:08:50 +03:00 committed by Reuben Dowle
parent 6cfd90f353
commit 46d380217d
1 changed files with 1 additions and 0 deletions
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nhrpd/README.kernel
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@ -32,6 +32,7 @@ This list tries to collect them to one source of information:
commit "ipv4: introduce ip_dst_mtu_maybe_forward and protect forwarding path against pmtu spoofing" commit "ipv4: introduce ip_dst_mtu_maybe_forward and protect forwarding path against pmtu spoofing"
Workaround: Workaround:
Set sysctl net.ipv4.ip_forward_use_pmtu=1 Set sysctl net.ipv4.ip_forward_use_pmtu=1
See: https://marc.info/?t=143636239500003&r=1&w=2 for details
(Should fix kernel to have this by default on for tunnel devices) (Should fix kernel to have this by default on for tunnel devices)
- subtle path mtu mishandling issues - subtle path mtu mishandling issues