I recently tried to follow up on the "rtsol has been removed" warning and switch a diskless client (booting via in-kernel dhcp client and NFS on /) to dhcpcd.
This did not work well: midway through the dhcpcd startup, NFS started erroring out with EHOSTUNREACH. After talking to Roy, there is no "good" reason for this, and testing shows that running dhcpcd later works just fine, without interrupting the / mount. This led to the following change in /etc/rc.d/dhcpcd: --8<-- .. if ifconfig $( sysctl -n kern.root_device ) 2>/dev/null | fgrep flags= \ | fgrep -q UP; then # a diskless client, try to make sure everything is in core echo A diskless client, trying to get dhpcpcd into buffers... cat /sbin/dhcpcd > /dev/null fi run_rc_command "$1" -->8-- and this makes it work. Can anyone think of a safer way, or some alternative to handle it inside dhcpcd code? Martin