i can confirm, iwd isn't working on 5.11 kernel on fossa.
$ /usr/libexec/iwd RC4 support not found The following options are missing in the kernel: CONFIG_CRYPTO_USER_API_SKCIPHER CONFIG_CRYPTO_ECB CONFIG_CRYPTO_ARC4
$ cat /boot/config-5.11.0-25-generic | grep CONFIG_CRYPTO_ARC4 $
i can confirm, iwd isn't working on 5.11 kernel on fossa.
$ /usr/libexec/iwd CRYPTO_ USER_API_ SKCIPHER
RC4 support not found
The following options are missing in the kernel:
CONFIG_
CONFIG_CRYPTO_ECB
CONFIG_CRYPTO_ARC4
$ cat /boot/config- 5.11.0- 25-generic | grep CONFIG_CRYPTO_ARC4
$