Unable to Connect Using TLS_AES_128_CCM_SHA256 Cipher Despite Being Listed in nginx.conf

Question

I am using Ubuntu 20.04 server, running Openssl 1.1.1t, and nginx=1.21.6. I've configured nginx.conf to allow a set of ssl ciphers:

nginx.conf

    ssl_ciphers 'ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-CCM:ECDHE-ECDSA-AES128-CCM:AES256-GCM-SHA384:AES128-GCM-SHA256:CHACHA20-POLY1305-SHA256:TLS_AES_128_CCM_SHA256:TLS_AES_128_CCM_8_SHA256';

• ECDHE-ECDSA-AES256-GCM-SHA384
• ECDHE-RSA-AES256-GCM-SHA384
• ECDHE-ECDSA-CHACHA20-POLY1305
• ECDHE-RSA-CHACHA20-POLY1305
• ECDHE-ECDSA-AES128-GCM-SHA256
• ECDHE-RSA-AES128-GCM-SHA256
• ECDHE-ECDSA-AES256-CCM
• ECDHE-ECDSA-AES128-CCM
• AES256-GCM-SHA384
• AES128-GCM-SHA256
• CHACHA20-POLY1305-SHA256
• TLS_AES_128_CCM_SHA256
• TLS_AES_128_CCM_8_SHA256

According to the official OpenSSL documentation, the ciphers TLS_AES_128_CCM_SHA256 and TLS_AES_128_CCM_8_SHA256 are supported.

However, when I try to connect to the target machine using the openssl s_client command, I get an error:

# openssl s_client -connect 192.168.2.15:443 -cipher TLS_AES_128_CCM_SHA256 -tls1_3

Error with command: "-cipher TLS_AES_128_CCM_SHA256"
140594233390400:error:1410D0B9:SSL routines:SSL_CTX_set_cipher_list:no cipher match:../ssl/ssl_lib.c:2564:

I tried to verify the supported ciphers using the openssl ciphers -v command, I do not see any matching ciphers:

#openssl ciphers -v | grep -i CCM
#

I am unable to track what actually I am missing here.