Hello, i added the fourth IP address to my server but it's not responding to the trace route it's only reachable from the server itself but not allowed to be usable through the net

traceroute to 92.243.20.93 (92.243.20.93), 30 hops max, 40 byte packets

1 174.34.174.98.rdns.ubiquityservers.com (174.34.174.98) 0.053 ms 0.034 ms 0.029 ms

2 ip65-47-180-113.z180-47-65.customer.algx.net (65.47.180.113) 1.135 ms 1.054 ms 1.015 ms

3 ge11-1-4d0.mcr1.chicago-il.us.xo.net (207.88.172.5) 1.074 ms 1.099 ms 1.091 ms

4 vb1700.rar3.chicago-il.us.xo.net (216.156.0.161) 2.749 ms 2.713 ms 2.905 ms

5 ae0d1.cir1.chicago2-il.us.xo.net (207.88.13.5) 1.379 ms 1.410 ms 1.383 ms

6 * * *

7 Vlan428.icore1.TTT-Scarborough.as6453.net (206.82.131.13) 30.639 ms 29.659 ms 29.742 ms

8 Vlan24.icore1.MTT-Montreal.as6453.net (206.82.135.13) 33.941 ms 33.925 ms 33.846 ms

9 * * *

10 Vlan538.icore1.PVU-Paris.as6453.net (195.219.241.134) 108.668 ms 108.800 ms 108.995 ms

11 po82-vd3.core3-d.gandi.net (217.70.176.214) 107.165 ms 107.152 ms 106.901 ms

12 vl9.dist1-d.gandi.net (217.70.176.113) 107.147 ms 107.316 ms 107.372 ms

13 * * *

14 * * *

15 * * *

16 * * *

17 * * *

18 * * *

19 * * *

20 * * *

21 * * *

22 * * *

23 * * *

24 * * *

25 * * *

26 * * *

27 * * *

28 * * *

29 * * *

30 * * *

but with any of the other IPs it works nice

traceroute to mody.biz (92.243.20.187), 30 hops max, 40 byte packets

1 174.34.174.98.rdns.ubiquityservers.com (174.34.174.98) 0.048 ms 0.045 ms 0.030 ms

2 ip65-47-180-113.z180-47-65.customer.algx.net (65.47.180.113) 1.099 ms 1.070 ms 1.041 ms

3 ge11-1-3d0.mcr1.chicago-il.us.xo.net (207.88.172.1) 1.072 ms 1.059 ms 1.087 ms

4 vb1700.rar3.chicago-il.us.xo.net (216.156.0.161) 2.033 ms 2.033 ms 2.197 ms

5 ae0d1.cir1.chicago2-il.us.xo.net (207.88.13.5) 1.431 ms 1.463 ms 1.428 ms

6 206.111.2.206.ptr.us.xo.net (206.111.2.206) 4.287 ms 4.286 ms *

7 Vlan428.icore1.TTT-Scarborough.as6453.net (206.82.131.13) 23.763 ms 21.639 ms 19.890 ms

8 Vlan24.icore1.MTT-Montreal.as6453.net (206.82.135.13) 30.345 ms 30.281 ms 30.524 ms

9 * * *

10 Vlan538.icore1.PVU-Paris.as6453.net (195.219.241.134) 109.296 ms 109.266 ms 109.237 ms

11 po84-vd1.core1-d.gandi.net (217.70.176.218) 106.846 ms 106.717 ms 106.867 ms

12 vl9.dist3-d.gandi.net (217.70.176.116) 106.965 ms 106.983 ms 107.087 ms

13 (92.243.20.187) 106.575 ms 106.607 ms 106.763 ms

i wish to found a fast solution to the fourth IP plz,

thanks.

Did you follow the instructions at http://wiki.gandi.net/en/hosting/manage-interface ?

Your 4th IP is probably in a different subnet. Once you apply the sysctl changes, it should work all fine.