Missing parameter on documentation to start the deamon

When launching the daemon, without the -l option (in localhost tests), we get the following error:

# NA -- Error -- gekkofs-deps/mercury/src/na/na_ofi.c:1680
 # na_ofi_domain_open(): No provider found for "sockets" provider on domain "argard"
# NA -- Error -- gekkofs-deps/mercury/src/na/na_ofi.c:3266
 # na_ofi_initialize(): Could not open domain for sockets, argard
# NA -- Error -- gekkofs-deps/mercury/src/na/na.c:356
 # NA_Initialize_opt(): Could not initialize plugin
# HG -- Error -- gekkofs-deps/mercury/src/mercury_core.c:1130
 # hg_core_init(): Could not initialize NA class
# HG -- Error -- gekkofs-deps/mercury/src/mercury_core.c:3596
 # HG_Core_init_opt(): Cannot initialize HG core layer
# HG -- Error -- gekkofs-deps/mercury/src/mercury.c:1093
 # HG_Init_opt(): Could not create HG core class
Failed to initialize environment: Failed to initialize the Margo RPC server

Including the -l localhost option makes it work.