When specifying ip2nets, this syntax works:
o2ib0(ib0) 192.168.[112-127].* ; \
adding an alias to the string causes a failure:
o2ib0(ib0:0) 192.168.[112-127].* ;
Result:
LustreError: 14206:0:(o2iblnd.c:2594:kiblnd_create_dev()) Can't find netdev of IF: ib0:0

Either ip2nets should not use the hardware designation (ibx) or it should parse the alias properly and yield a better error message.