Error after executing opkg install command

[ghost]

I see the error below when executing the install command. I am running OpenWrt Chaos Calmer 15.05.1. Any ideas how I can get this working? Thanks!

root@OpenWrt:/tmp# opkg install port-mirroring_1.4.3-1_ar71xx.ipk
Unknown package 'port-mirroring'.
Collected errors:
 * pkg_hash_fetch_best_installation_candidate: Packages for port-mirroring found, but incompatible with the architectures configured
 * opkg_install_cmd: Cannot install package port-mirroring.
root@OpenWrt:/tmp#

[Juniorlimaivd]

Someone has success solving this?