Change existing IP via nmcli

[Jorge Fábregas <jorge fabregas gmail com>]

Hi everyone,

Fedora 20 here. I'm learning my way through nmcli and I'm having a hard
time trying to change an existing ip address (non-interactive way):

nmcli con mod my-con-em1 ipv4.addresses 192.168.200.101/24 192.168.101.1

The problem is that it's not *modifying* the ip.  It is actually
*adding* it to the existing connection.  Is this a bug or am I missing
something?

I know there are alternate ways (GUI version, edit ifcfg* file, nmcli
interactive way)...just want to know what I'm doing wrong on the above
command.

BTW, playing with the above issue..I tried this one:

nmcli con mod my-con-em1 ipv4.addresses " "

...in order to see if I could empty out all existing IP addresses and
got nmcli to crash:

** (process:16190): CRITICAL **: nmc_parse_and_build_ip4_address:
assertion 'ip_str != NULL' failed
Segmentation fault (core dumped)

100% reproducible.  Don't know if it's a known issue.  If not please let
me know so I can open a bugzilla.

Thanks!
Jorge