ifconfig from 5.0_RC2 fails to work on -current

[Iain Hibbert <plunky%rya-online.net@localhost>]

Hi,
   I tried booting a -current kernel with a 5.0RC2 userland and ifconfig
fails to get interface information:

  {1} ifconfig -a
  ifconfig: getifaddrs: Invalid argument
  {2} ifconfig wpi0
  ifconfig: getifaddrs: Invalid argument
  {3} ifconfig wm0
  ifconfig: getifaddrs: Invalid argument
  {4}: ifconfig sdfs3
  ifconfig: SIOCGIFFLAGS sdfs3: Device not configured

using a static version from the NetBSD-current destdir worked fine. Is the
5.0RC2 version expected to work/not work?

iain