Confusing error check precedence

[xtaran]

I know this is minor and the example more or less stupid:

$ fping -a -g 2001:db8:120:4161::4/64
Error: netmask must be between 1 and 30 (is: 64)
$ fping -a -g 2001:db8:120:4161::4/30
Error: -g works only with IPv4 addresses

But I think that in fping6 the -g check should come before the (IPv4!) netmask check, i.e. that the above example throws the "-g works only with IPv4 addresses" already in the first case, not only in the second.