pfSense

IPFW is not loading the /tmp/rules.limiter file correctly in 2.4.X if the specified bandwidth value is not a whole number. For example:

pipe 1 config  bw 5.5Mb

That file is loaded correctly in 2.3.X and results in a pipe:

00001:   5.500 Mbit/s    0 ms burst 0
q131073  50 sl. 0 flows (1 buckets) sched 65537 weight 0 lmax 0 pri 0 droptail
 sched 65537 type FIFO flags 0x0 0 buckets 0 active

But in 2.4 it results in:

00001:   5.000 bit/s     0 ms burst 0 
q131073  50 sl. 0 flows (1 buckets) sched 65537 weight 0 lmax 0 pri 0 droptail
 sched 65537 type FIFO flags 0x0 0 buckets 0 active

Bits per second, which looks like completely blocked.

In 2.3.X and 2.4.X fractional values are invalid in the webgui are cannot be created but in 2.2 and earlier they were valid and are not modified at upgrade.

Additionally if you have a fractional value bandwidth limiter that is working fine in 2.3.X it's not possible to update it to whole number in the gui before upgrading due to a problem with the validation. See screenshot.