Hello, After much googling i was able to use eapol_test with ipv6. Distro provided eapol_test tool does not support ipv6 so had to build from source. Looking at this old post, https://www.spinics.net/lists/hostap/msg06118.html i needed to add the "CONFIG_IPV6=y" to the eapol_test/config_linux file to be able to support radius server's ipv6 address. *Possible to add it to source code?* *I'm willing to PR it.* Just some extra info: Output from distro eapol_test: $ eapol_test -c eapol_test.txt -s <mysecret> -a ::1 -N <whatever> Reading configuration file 'eapol_test.txt' ... Invalid IP address '::1' eapol_test: eapol_test.c:1036: wpa_init_conf: Assertion `0' failed. Aborted Output from source build with CONFIG_IPV6=y: $ ./eapol_test_source -c eapol_test.txt -s <mysecret> -a ::1 -N <whatever> Reading configuration file 'eapol_test.txt' Line: 1 - start of a new network block ... EAP: deinitialize previously used EAP method (25, PEAP) at EAP deinit ENGINE: engine deinit MPPE keys OK: 1 mismatch: 0 SUCCESS Thank you for the support! -Dave