Unexpected behavior you saw
In the phosphor-networkd recipe, the PACKAGECONFIG[persist-mac] option is defined as:

PACKAGECONFIG[persist-mac] = "-Dpersist-mac=true, -persist-mac=false,,"

The disable argument is missing the -D prefix. As a result, Meson receives -persist-mac=false, which is an invalid argument and is ignored.

Expected behavior
The recipe should pass a valid disable flag to Meson so that removing the option actually disables it:

PACKAGECONFIG[persist-mac] = "-Dpersist-mac=true,-Dpersist-mac=false,,"

To Reproduce
Steps to reproduce the behavior:

1. In a bbappend, add: PACKAGECONFIG:remove = "persist-mac".
2. Build or run phosphor-networkd.
3. Observe the meson configure command line includes -persist-mac=false (missing -D) and Meson errors with Unknown arguments, causing the task to fail.

Screenshots

OpenBMC Information:
meta-phosphor/recipes-phosphor/network/phosphor-network_git.bb (line defining PACKAGECONFIG[persist-mac]).