I noticed that including 1.8.15 in mac homebrew has stalled out since the end of January, 2015 behind reporting (and hopefully patching) an issue here, upstream. Unfortunately, I don't have the expertise to assist other than documenting this issue here.
https://github.com/Homebrew/homebrew/pull/36198
# s6_addr16 is not available in Mac OS X
inreplace 'src/plugins/ipmi_intf.c', 's6_addr16', 's6_addr'
IPMI tool doesn't seem to be using s6_addr16 or s6_addr32. At least not the version in git. I'm closing this ticket as invalid. If that's not true, please, provide more information related to the version of IPMI tool checked out from git.
Thank you,
Z.