IPv6 cannot be disabled. When the port think ipv6 is disabled it calls configure with "--disable-ipv6". Unfortunately, due to a bug in proftp's configure script, this causes ipv6 to be enabled. I've reported this to the proftpd folks as bug 2676. Fix: Add the following patch to the files directory: How-To-Repeat: Run make without any options (or with WITHOUT_IPV6), then check config.h and see PR_USE_IPV6 is defined.
Responsible Changed From-To: freebsd-ports-bugs->mharo Over to maintainer.
State Changed From-To: open->closed Committed. Thanks!