isp1 : eth2 with 4 static ip isp2: eth3 with 4 static ip i readed documentation about Advanced ip routing with iproute2 at http://lartc.org/howto/lartc.rpdb.multiple-links.html i find the script mpath2 on site http://www.ssi.bg/~ja/tmp/mpath2.sh have i to add one line type off command ip route add $P2_NET dev $IF2 src $IP2 table T2 for every pubblic ip assained by my isp to the relative table eth2 = 1 ip address assigned eth2:0 = 2 ip address assigned etc. and eth1 similar