inn, cleanfeed and ipv6

I've had a few reports of select users posts not getting out to all
servers, and experienced it myself in a group last night, running one of
my scripts that checks open servers, verified my suspicions, there seems
to be something in the cleanfead script inn servers not liking (all?)
ipv6 addresses.

I resent my message 3 times, and inn servers declined the takethis every
time, I removed only the ipv6 address in it, and the message was taken by
the peers who operate inn, I asked 2 of who complained about this I know
are not dummies to try it, same exact message, resend, wait an hour then
resend removing only ipv6 address, they reported back to me this morning
there ipv6-less messages can be seen on the inn based servers.

all the ipv6 addresses -mine and the examples they sent me, were all
different, nowhere near each other entirely. Now I know I've seen some in
the past, I've sent some in the past that have propogated, perhaps its
not all address es that trigger this.

I know I was shown inns cleanfeed few years back and its totally
different from dnews's cleanfeed which dnews has had internally since day
dot, I'm suspecting since the peers who accepted it, do binaries, it
might be in the detection of such messages, and is misclassifying ipv6
addresses - but as not an inn operator, I'm only guessing.