Why "sshd Bad prime description" errors? I've noticed that all our FreeBSD machines throw sshd Bad prime description in line xxx (insert a large number of values for xxx). Presumably this is not something they are all supposed to be doing (despite the fact that there's no visible problems with functionality). Unfortunately, I've not been able to find any useful resources on the web that relate to this problem. Any pointers for troubleshooting/making this obnoxious message go away?

I was incorrect in saying it was all of our machines. It did afflict multiples, but eventually I found one without the problem! I copied the /etc/ssh/moduli file from that machine and put it onto the others and the problem is solved!