Option 12 hostname sent to RPi is the first octet of the IP address. This seems incorrect.
For example, if the IP address is 192.168.67.53, the value visible in the logs is - *Oct 19 16:38:49 server dnsmasq-dhcp[14224]: 1870967312 sent size: 3 option: 12 hostname 192* and so is in the value in /run/net-* on the Ubuntu booted client. As a result of this misinformation, systems relying on the value are giving undesired results. One such case being the ltsp project. Issue ref: https://github.com/ltsp/ltsp/issues/582 which contains further details. Attached is the log of RPi 4B netbooting.
rpi_wrong_hostname_issue.log
Description: Binary data
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