ping not working after upgrading to -CURRENT

Hi,

I just started looking into FreeBSD after a hiatus of some years. I
did an upgrade to -CURRENT this morning following the instructions
here:

https://www.freebsd.org/doc/en/books/handbook/makeworld.html

There seems to be a problem with system capabilities, since ping
doesn't work anymore and gives me the following error message:

ping: unable to limit access to system.dns service: File exists

Any ideas?

Best,
Edvard