Description of problem:
ipcalc utils handling netmask parameters incorrectly with '-c' option. one problem: ignoring invalid cidr, second - not accepting netmask in format allowed by manual.

Version-Release number of selected component (if applicable):


How reproducible:

problem one:
Steps to Reproduce:
1. ipcalc -c 128.34.34.2/FF;echo $?

Actual results:
not output
error code: 0

Expected results:
invalid mask, non-zero error code

and second:
Steps to Reproduce:
1. ipcalc -c 128.34.34.2 255.255.255.0

Actual results:

ipcalc: unexpected argument: 255.255.0.0
Usage: ipcalc [OPTION...]
  -c, --check         Validate IP address for specified address family
  -4, --ipv4          IPv4 address family (default)
  -6, --ipv6          IPv6 address family
  -b, --broadcast     Display calculated broadcast address
  -h, --hostname      Show hostname determined via DNS
  -m, --netmask       Display default netmask for IP (class A, B, or C)
  -n, --network       Display network address
  -p, --prefix        Display network prefix
  -s, --silent        Don't ever display error messages

Help options:
  -?, --help          Show this help message
  --usage             Display brief usage message

error code: 1


Expected results:

no ouput. error code zero.

Additional info: