VERIFIED in NetworkManager-1.40.16-4.el8:

Token is requested:
Hypertext Transfer Protocol
    PUT /latest/api/token HTTP/1.1\r\n
        [Expert Info (Chat/Sequence): PUT /latest/api/token HTTP/1.1\r\n]
            [PUT /latest/api/token HTTP/1.1\r\n]
            [Severity level: Chat]
            [Group: Sequence]
        Request Method: PUT
        Request URI: /latest/api/token
        Request Version: HTTP/1.1
    Host: 169.254.169.254\r\n
    Accept: */*\r\n
    X-aws-ec2-metadata-token-ttl-seconds: 180\r\n
    \r\n
    [Full request URI: http://169.254.169.254/latest/api/token]
    [HTTP request 1/1]
    [Response in frame: 2]


And then used:
Hypertext Transfer Protocol
    GET /2018-09-24/meta-data/network/interfaces/macs/ HTTP/1.1\r\n
        [Expert Info (Chat/Sequence): GET /2018-09-24/meta-data/network/interfaces/macs/ HTTP/1.1\r\n]
            [GET /2018-09-24/meta-data/network/interfaces/macs/ HTTP/1.1\r\n]
            [Severity level: Chat]
            [Group: Sequence]
        Request Method: GET
        Request URI: /2018-09-24/meta-data/network/interfaces/macs/
        Request Version: HTTP/1.1
    Host: 169.254.169.254\r\n
    Accept: */*\r\n
    X-aws-ec2-metadata-token: AQAAALH-k7i18JMkK-ORLZQfAa7nkNjQbKwpQPExNHqzk1oL_7eh-A==\r\n
    \r\n
    [Full request URI: http://169.254.169.254/2018-09-24/meta-data/network/interfaces/macs/]
    [HTTP request 1/1]
    [Response in frame: 4]