Yeah, this is a known issue[^1]. If you compile the code yourself with the proposed patch, it should work[^2]. Note I don't run -current, so I'm merely speaking as a reader. I recommend staying in the loop with upstream seeing how disruptive issues with dhcpcd can be. I always look at the issues on GitHub before updating it.
[^1]: https://github.com/NetworkConfiguration/dhcpcd/issues/555 [^2]: https://github.com/NetworkConfiguration/dhcpcd/issues/555#issuecomment-3546211800
