Our SLES 11 has the following patchlevel:
SUSE Linux Enterprise Server 11 (x86_64)
VERSION = 11
PATCHLEVEL = 2
We want to set up two NICs, one for our internal server network and one with a public IP-address.
Here is the problem:
When I set the default gateway to 10.2.24.1 (network of eth0), 10.2.24.10 can be reached from every network, e.g. my workstation network 10.10.0.0/24.
BUT the public IP-address cannot be reached from any network except the 18.104.22.168/24 itself. I used wireshark to ensure that my network traffic is reaching the server - which it does, but no echo reply is leaving the server, on any interface whatsoever.
If I switch the default gateway to 22.214.171.124, the same problem appears for the server network interface.
IP forwarding is enabled, even though it should not be necessary for this to work.