From 46d380217d5e44e3f48b1a6192c578430e832caa Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Timo=20Ter=C3=A4s?= Date: Sun, 19 Jul 2020 18:08:50 +0300 Subject: [PATCH] nhrpd: add reference to net.ipv4.ip_forward_use_pmtu=1 thread Add a mailing list reference regard net.ipv4.ip_forward_use_pmtu=1. Signed-off-by: Reuben Dowle --- nhrpd/README.kernel | 1 + 1 file changed, 1 insertion(+) diff --git a/nhrpd/README.kernel b/nhrpd/README.kernel index 5831316f1f..067ff9838c 100644 --- a/nhrpd/README.kernel +++ b/nhrpd/README.kernel @@ -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" Workaround: 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) - subtle path mtu mishandling issues