Re: Using netem on one interface expands to all interfaces

On 02/13/2019 11:16 AM, Paul Hoffman wrote:
> However, now pinging addresses on *any* interface on the box gets a 
> 1200ms delay. That is, pinging addresses on enp0s18 gets the same delay 
> as was given to enp0s8, but even weirder, pinging addresses on enp0s9 
> get the 1200ms delay as well.
> 
> Is this expected? Is it preventable? All clues are appreciated.

I don't know if it's expected or not.

Are you sure that you're pinging the interface that you expect to be 
pinging?

Check the MAC address in the ARP / ND cache to see which physical 
interface packets are actually addressed to.

You don't show any IPs, so I don't know if you're putting multiple 
interfaces in the same subnet or using different subnets per interface.

You may need to fiddle with some /proc / sysctl settings to make sure 
Linux is actually using the interface that you expect.

Research "strong host model" for more details on what I think may be 
happening.



-- 
Grant. . . .
unix || die