Blame tests/p_tcpdump/03_tcpdump_lo_ipv6.sh

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#!/bin/sh
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# Author: Christoph Galuschka <tigalch@tigalch.org>
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#         Athmane Madjoudj <athmanem@gmail.com>
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t_Log "Running $0 - TCPdump test IPv6 to lo"
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# Grabing IPv6 address of lo to check if IPv6 is enabled
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IP=$(ip addr list lo | grep 'inet6 ')
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regex='\t*inet6\ (.*)\/.*'
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if [[ $IP =~ $regex ]]
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  then
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  t_Log "IPv6 seems to be enabled - runing test"
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  FILE='/var/tmp/lo_test6.pcap'
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  COUNT='4'
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  #Dumping ping6s to loopback to file
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  tcpdump -q -n -p -i lo -w $FILE &
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  # If we don't wait a short time, the first paket will be missed by tcpdump
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  sleep 1
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  ping6 -q -c $COUNT -i 0.25 ::1 > /dev/null 2>&1
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  sleep 1
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  killall -s SIGINT tcpdump
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  sleep 1
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  # reading from file, for each ping we should see two pakets
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  WORKING=$( tcpdump -r $FILE | grep -ci icmp6 )
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  if [ $WORKING == $[COUNT*2] ]; then
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    ret_val=0
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  else
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    t_Log "ping6 to loopback droped pakets!! This should not happen on loopback"
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    ret_val=1
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  fi
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  # Remove file afterwards
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  /bin/rm $FILE
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else
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  t_Log "IPv6 seems to be disabled - skipping test"
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  ret_val=0
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fi
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t_CheckExitStatus $ret_val