ping acting strangely on 13.3

Hello.

On some machines I completely removed IPv6 by commenting "options INET6" 
in the kernel.
I've recently upgraded one of these from 13.2 to 13.3 and now ping is 
behaving differently from before.

> % host www.google.it
> www.google.it has address 216.58.204.227
> www.google.it has IPv6 address 2a00:1450:4002:415::2003
> % ping www.google.it
> ping: socket ssend: Address family not supported by protocol family
> % ping -4 www.google.it
> PING www.google.it (216.58.204.227): 56 data bytes
> 64 bytes from 216.58.204.227: icmp_seq=0 ttl=117 time=13.422 ms
> 64 bytes from 216.58.204.227: icmp_seq=1 ttl=117 time=15.746 ms
> ^C

On 13.2 and 14.0 (and every previous version I ever used), the first 
ping ("ping www.google.it") behaves exactly as if "-4" was given.

I din't read anything about this change in release notes (unless I'm 
failing to understand something) and the ping man pages are identical.

Is this some regression? Do I need to set something?
Are others seeing this?
Shall I report this as a bug?

  bye & Thanks
	av.