echo installation tcpdump pour DD-WRT à partir de $IP
NP=tcpdump_3.9.4-1_mipsel.ipk
rm $NP
wget ftp://$IP/$NP
ls -al $NP
ipkg -d $PWD install $NP 
ls -al $PWD/usr/sbin/tcpdump
rm $NP
NP=libpcap_0.9.4-1_mipsel.ipk
wget ftp://$IP/$NP
ls -al $NP
ipkg -d $PWD install $NP 
ls -al $PWD/usr/lib/libpcap*
rm $NP
brctl addif br0 vlan1 
brctl show br0
ifconfig vlan1 0.0.0.0 up
export LD_LIBRARY_PATH=$PWD/usr/lib:`echo $LD_LIBRARY_PATH | sed "s!$PWD/usr/lib:!!" `
export PATH=$PWD/usr/sbin:`echo $PATH | sed "s!$PWD/usr/sbin:!!" `