X-Git-Url: https://git.exim.org/users/jgh/exim.git/blobdiff_plain/38da9088282b3a74ddcbfe8d60382b55a7e9f426..78a78accf3deee2bbde619882598a192cb0167c8:/test/scripts/1990-TCP-Fast-Open/1990

diff --git a/test/scripts/1990-TCP-Fast-Open/1990 b/test/scripts/1990-TCP-Fast-Open/1990
index 953098f31..1fc4682aa 100644
--- a/test/scripts/1990-TCP-Fast-Open/1990
+++ b/test/scripts/1990-TCP-Fast-Open/1990
@@ -32,7 +32,7 @@ system ("tc qdisc add dev lo root netem delay 50ms");
 # option on the SYN.
 #
 sudo perl
-system ("echo 0 > /proc/sys/net/ipv4/tcp_fastopen_blackhole_timeout_sec");
+system ("[ -e /proc/sys/net/ipv4/tcp_fastopen_blackhole_timeout_sec ] && echo 0 > /proc/sys/net/ipv4/tcp_fastopen_blackhole_timeout_sec");
 ****
 #
 # First time runs will see a TFO request option only; subsequent
@@ -75,7 +75,7 @@ sleep 3
 #
 sudo perl
 system ("tc qdisc delete dev lo root");
-system ("echo 3600 > /proc/sys/net/ipv4/tcp_fastopen_blackhole_timeout_sec");
+system ("[ -e /proc/sys/net/ipv4/tcp_fastopen_blackhole_timeout_sec ] && echo 3600 > /proc/sys/net/ipv4/tcp_fastopen_blackhole_timeout_sec");
 ****
 #
 killdaemon