runqemu-ifdown: clean up the remaining iptables rules
The iptables rules for the tap interface are added by runqemu-ifup everytime we use runqemu to start a qemu target. But it's not cleaned up when runqemu exits. This patch cleans up the remaining iptables rules for the tap interface in runqemu-ifdown. [YOCTO #5047] (From OE-Core rev: ef38a0aed35357d035ca587162158cd2f55b958f) Signed-off-by: Chen Qi <Qi.Chen@windriver.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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@ -50,3 +50,17 @@ if [ ! -e "$TUNCTL" ]; then
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fi
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fi
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$TUNCTL -d $TAP
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$TUNCTL -d $TAP
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# cleanup the remaining iptables rules
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IPTABLES=`which iptables 2> /dev/null`
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if [ "x$IPTABLES" = "x" ]; then
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IPTABLES=/sbin/iptables
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fi
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if [ ! -x "$IPTABLES" ]; then
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echo "$IPTABLES cannot be executed"
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exit 1
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fi
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n=$[ (`echo $TAP | sed 's/tap//'` * 2) + 1 ]
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dest=$[ (`echo $TAP | sed 's/tap//'` * 2) + 2 ]
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$IPTABLES -D POSTROUTING -t nat -j MASQUERADE -s 192.168.7.$n/32
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$IPTABLES -D POSTROUTING -t nat -j MASQUERADE -s 192.168.7.$dest/32
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