In case anyone is crazy enough to run #FreeBSD on an Ampere Altra Max w/ Intel X550 NICs (#ix0): if upgrading from 15.1p4 to 15.1p5 causes a boot hang with "Device leaked memory resources", try these boot hints: dev.ix.0.iflib.override_ntxds="1024" dev.ix.0.iflib.override_nrxds="1024" dev.ix.0.iflib.override_ntxqs="8" dev.ix.0.iflib.override_nrxqs="8" dev.ix.1.iflib.override_ntxds="1024" dev.ix.1.iflib.override_nrxqs="1024" dev.ix.1.iflib.override_ntxqs="8" dev.ix.1.iflib.override_nrxqs="8" 🤦‍♀️