assigning .0 and .255 addresses to clients?

[Ed Ravin]

Also somewhat off-topic, has anyone experienced trouble in recent
years with assigning clients IP addresses that end in .0 or .255?

I ran into this around ten years ago, because in the wake of the
"smurf" attacks (packets with spoofed source addresses that when
replied to, became broadcast addresses at a targeted network,
causing congestion or worse), some less than clueful providers
put in filters to block source IPs ending with .0 and .255, in
the mistaken belief that the entire Internet was composed entirely
of /24 subnets.

Has anyone heard of this still happening?  Searching the Web, I
only found hits over ten years old.

Thanks,

	-- Ed