In the monitoring plugins 2.2 release, the "check_snmp --help" output
says this:
-4, --use-ipv4
Use IPv4 connection
-6, --use-ipv6
Use IPv6 connection
but the code says otherwise about how the long options are named:
{"ipv4", no_argument, 0, '4'},
{"ipv6", no_argument, 0, '6'},
This discrepancy can cause a lot of confusion.
Looking around at the other plugins that have similar arguments:
check_by_ssh
check_dig
check_fping
check_http
check_ldap
check_ntp
check_ntp_peer
check_ntp_time
check_ping
check_smtp
check_ssh
check_tcp
their code all supports the full --use-ipv4 and --use-ipv6 arguments,
and not the --ipv4 and --ipv6 forms. So for the sake of consistency,
the code in check_snmp.c should be modified to support what the help
message says. Perhaps for backward compatibility, it might also be
useful to continue supporting the --ipv4 and --ipv6 forms with
check_snmp, but I will leave that for others to decide.
