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mwan3: disable DNS lookups for ping checks

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By default, ping does a reverse DNS of the IP that you are pinging.
When you have a network issue (such as when a link has just gone down
and you haven't yet marked it down), this lookup can cause failures on
tests for links that are still good.

This option only works for iputils ping.
For busybox the option is not evaluated, but it is accepted without
throwing an error.

Fixes: #14968
Fixes: #14924

Signed-off-by: Florian Eckert <fe@dev.tdt.de>
Suggested-by: David Lang <david@lang.hm>
(cherry picked from commit 7cfb282432)
This commit is contained in:
Florian Eckert 2021-03-01 12:22:38 +01:00
parent b9ff010dca
commit 0042f2dfa7
2 changed files with 3 additions and 3 deletions
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2
net/mwan3/Makefile
View file

@ -8,7 +8,7 @@
include $(TOPDIR)/rules.mk
PKG_NAME:=mwan3
PKG_VERSION:=2.10.6
PKG_VERSION:=2.10.7
PKG_RELEASE:=1
PKG_MAINTAINER:=Florian Eckert <fe@dev.tdt.de>, \
Aaron Goodman <aaronjg@alumni.stanford.edu>

4
net/mwan3/files/usr/sbin/mwan3track
View file

@ -242,12 +242,12 @@ main() {
case "$track_method" in
ping)
if [ $check_quality -eq 0 ]; then
WRAP $PING -c $count -W $timeout -s $size -t $max_ttl -q $track_ip &> /dev/null &
WRAP $PING -n -c $count -W $timeout -s $size -t $max_ttl -q $track_ip &> /dev/null &
TRACK_PID=$!
wait $TRACK_PID
result=$?
else
WRAP $PING -c $count -W $timeout -s $size -t $max_ttl -q $track_ip 2>/dev/null > $TRACK_OUTPUT &
WRAP $PING -n -c $count -W $timeout -s $size -t $max_ttl -q $track_ip 2>/dev/null > $TRACK_OUTPUT &
TRACK_PID=$!
wait $TRACK_PID
ping_status=$?