Duplcates on bridge

[svirus]

When I adding in VM two interfaces to same bridge then I see duplicates on arping
config:

dups:

# arping 10.33.102.23
ARPING 10.33.102.23
60 bytes from 22:ca:b9:f7:65:88 (10.33.102.23): index=0 time=378.197 usec
60 bytes from 96:db:7c:26:c9:2c (10.33.102.23): index=1 time=444.363 usec
60 bytes from 96:db:7c:26:c9:2c (10.33.102.23): index=2 time=771.571 usec
60 bytes from 22:ca:b9:f7:65:88 (10.33.102.23): index=3 time=797.353 usec
60 bytes from 96:db:7c:26:c9:2c (10.33.102.23): index=4 time=811.056 usec
60 bytes from 22:ca:b9:f7:65:88 (10.33.102.23): index=5 time=836.490 usec
60 bytes from 96:db:7c:26:c9:2c (10.33.102.23): index=6 time=599.131 usec
60 bytes from 22:ca:b9:f7:65:88 (10.33.102.23): index=7 time=618.959 usec
60 bytes from 22:ca:b9:f7:65:88 (10.33.102.23): index=8 time=543.966 usec
60 bytes from 96:db:7c:26:c9:2c (10.33.102.23): index=9 time=562.344 usec

There is an option to prevent this?

I have MAC Filter enabled and I think that will be filter this.

Thanks in advanced

 

[shanreich]

Linux uses a weak host model [1], which means that it replies to arp packages on any interface by default. You can prevent this by setting the rp_filter [2] sysctl to 1. Is there a particular reason why you are adding two network interfaces on the same bridge?

[1] https://en.wikipedia.org/wiki/Host_model
[2] https://sysctl-explorer.net/net/ipv4/rp_filter/

 

[svirus]

Ah I forog about `rp_filter` thanks!

I need to do couse of OVH networks.
I have public IP block added to vRACK, and same vRACK have also internal connections.
Two networks cards becouse I have configured firewall in proxmox.