nataliasmode1 --sameports does not function

[SteveC]

Configuration: VirtualBox on Windows 7 using NAT, a bridged adapter and a host-only adapter. Guest OS is FreeBSD 10.0

VBoxManage modifyvm "FreeBSD-Router-10.0" --nataliasmode1 sameports

does not work (it appears to be ignored). The command succeeds, however there no effect on the NAT behavior.

I have tried a number of versions back to 3.2.16, and it does not work there either.

Have absolute verification that the ports ARE being changed by:

1. Starting the VM
2. Establish a connection (in this case, using SSH)
3. Look at the source port as reported by the VM (netstat -n)
4. Look at the source port as shown at the far end
5. The ports are different.
6. Connect to the same machine without using NAT - the ports are unaltered.

This is a complete show stopper because we depend on NFS mounts in a development environment. The issue is actually affecting a lot of people. No, unfortunately, we cannot modify the NFS server. Already have dents in my forehead trying to get that through!!

I will test anything you would like. Can provide information, VMs, etc. if needed. THANKS !!!! Regards, Steve

[SteveC]

Logfile

[chrijm]

Seeing same issue here. Ports are randomly changed even when set to use sameports. This affects other protocols as well that relay on a specific source port number.

[Valery Ushakov]

#13000