Ping fails, Ping -R working

[Arano]

Hi !

I've some trouble here.
From a CentOS 6.5 server (named A), i'm unable to ping another machine (say "B"), but ping -R and traceroute works perfectly fine !
The address of the srv is 192.168.1.10 and B's 192.168.2.8. Each on different Vlan, linked by a router (IPs : 192.168.1.1 and 192.168.2.1)

When I do "ping 192.168.2.1" from A, i've absolutly no output. On another CentOS 6.6, i've ONE unique reply.

When I do "ping -R 192.168.2.1", I get the routes with reply every interval :
NOP
RR: 192.168.1.10
192.168.2.1
192.168.1.1
192.168.1.10
With same routes following.

Traceroute respond immediatly.
192.168.1.1
192.168.2.8

On the same subnet / vlan 192.168.1.0/24 a Windows machine ping correctly.

I have not copied the results because theses machines aren't linked to the Net, but if necessary I can transfert the output through text files.
The reals IP aren't 192.168.0.0 but are more like 124.149.0.0, but i doubt it could be Class stuff... ?

With "Tcpdump -A icmp", the reply packet is well seen, and maybe slightly different from others ping reply, but I haven't great knowledge in this.

[TrevorH]

Is iptables configured to allow ping responses?

[Arano]

Iptable allow everything.
The server has no trouble to ping other machines.

[TrevorH]

No, the server that you are pinging, not the one you are pinging from.

[Arano]

A debian 7.3 and all machines under Windows can ping correctly the "B" machine.
I have several machines which can ping it, but I can't log on this machine and I dont even know the OS on it