I have committed this patch here:
https://git.savannah.gnu.org/cgit/inetutils.git/commit/?id=afe3168ee9f15783c71653bee0ec97536daaf217
Btw, please add NEWS entries next time. I added the following,
corrections welcome:
https://git.savannah.gnu.org/cgit/inetutils.git/commit/?id=976de5463bedcd8060c7
Prefix lengths are much more convenient, support them as an alternative
to passing -m separately from -A.
* ifconfig/options.c (parse_opt): Detect prefix length, and in such a
case, call parse_opt_set_netmask.
Index: inetutils-2.3/ifconfig/options.c
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