<!-- Kamailio Project uses GitHub Issues only for bugs in the code or feature requests.

If you have questions about using Kamailio or related to its configuration file, ask on sr-users mailing list:

* http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users

If you have questions about developing extensions to Kamailio or its existing C code, ask on sr-dev mailing list

* http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-dev

Please try to fill this template as much as possible for any issue. It helps the developers to troubleshoot the issue.

If you submit a feature request (or enhancement), you can delete the text of the template and only add the description of what you would like to be added.

If there is no content to be filled in a section, the entire section can be removed.

You can delete the comments from the template sections when filling.

You can delete next line and everything above before submitting (it is a comment). -->

### Description

<!-- Explain what you did, what you expected to happen, and what actually happened. --> Kamailio start failed as carrierrouter ### Troubleshooting Main error `[parser_carrierroute.c:271]: parse_options(): Duplicate option definition max_targets` #### Reproduction Define module ``` modparam("carrierroute", "config_source", "file") modparam("carrierroute", "match_mode", 128) modparam("carrierroute", "config_file", "/etc/kamailio/carrierroute.conf")

``` Create carrierroute.conf like in module documentation ``` domain first { prefix + { max_targets = 2 target 192.168.1.1 { prob = 0.500000 hash_index = 1 status = 1 comment = "First Master" } target 192.168.1.2 { prob = 0.500000 hash_index = 2 status = 1 comment = "Firts Slave" } } }

domain second { prefix +99 { max_targets = 2 target 192.168.1.3 { prob = 0.500000 hash_index = 1 status = 1 comment = "Second Master" } target 192.168.1.4 { prob = 0.500000 hash_index = 2 status = 1 comment = "Second Slave" } } } ```

#### Debugging Data

<!-- If you got a core dump, use gdb to extract troubleshooting data - full backtrace, local variables and the list of the code at the issue location.

gdb /path/to/kamailio /path/to/corefile bt full info locals list

If you are familiar with gdb, feel free to attach more of what you consider to be relevant. -->

``` (paste your debugging data here) ```

#### Log Messages

<!-- Check the syslog file and if there are relevant log messages printed by Kamailio, add them next, or attach to issue, or provide a link to download them (e.g., to a pastebin site). -->

``` Apr 3 09:50:18 localhost /usr/sbin/kamailio[16964]: INFO: carrierroute [carrierroute.c:213]: mod_init(): use file as configuration source Apr 3 09:50:18 localhost /usr/sbin/kamailio[16964]: INFO: carrierroute [cr_carrier.c:98]: add_domain_data(): adding domain 1 'first' to carrier 1 'default' Apr 3 09:50:18 localhost /usr/sbin/kamailio[16964]: INFO: carrierroute [cr_rule.c:118]: add_route_rule(): no backed up rules Apr 3 09:50:18 localhost /usr/sbin/kamailio[16964]: INFO: carrierroute [cr_rule.c:118]: add_route_rule(): no backed up rules Apr 3 09:50:18 localhost /usr/sbin/kamailio[16964]: INFO: carrierroute [cr_carrier.c:98]: add_domain_data(): adding domain 2 'second' to carrier 1 'default' Apr 3 09:50:18 localhost /usr/sbin/kamailio[16964]: ERROR: carrierroute [parser_carrierroute.c:271]: parse_options(): Duplicate option definition max_targets Apr 3 09:50:18 localhost /usr/sbin/kamailio[16964]: ERROR: carrierroute [cr_config.c:351]: load_config(): Error in parsing Apr 3 09:50:18 localhost /usr/sbin/kamailio[16964]: ERROR: carrierroute [cr_data.c:185]: reload_route_data(): could not load routing data Apr 3 09:50:18 localhost /usr/sbin/kamailio[16964]: ERROR: carrierroute [carrierroute.c:255]: mod_init(): could not prepare route data Apr 3 09:50:18 localhost /usr/sbin/kamailio[16964]: ERROR: <core> [core/sr_module.c:987]: init_mod(): Error while initializing module carrierroute (/usr/lib64/kamailio/modules/carrierroute.so) ```

#### SIP Traffic

<!-- If the issue is exposed by processing specific SIP messages, grab them with ngrep or save in a pcap file, then add them next, or attach to issue, or provide a link to download them (e.g., to a pastebin site). -->

``` (paste your sip traffic here) ```

### Possible Solutions

<!-- If you found a solution or workaround for the issue, describe it. Ideally, provide a pull request with a fix. -->

### Additional Information

* **Kamailio Version** - output of `kamailio -v`

``` version: kamailio 5.1.2 (x86_64/linux) flags: STATS: Off, USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MEM, SHM_MMAP, PKG_MALLOC, Q_MALLOC, F_MALLOC, TLSF_MALLOC, DBG_SR_MEMORY, USE_FUTEX, FAST_LOCK-ADAPTIVE_WAIT, USE_DNS_CACHE, USE_DNS_FAILOVER, USE_NAPTR, USE_DST_BLACKLIST, HAVE_RESOLV_RES ADAPTIVE_WAIT_LOOPS=1024, MAX_RECV_BUFFER_SIZE 262144, MAX_LISTEN 16, MAX_URI_SIZE 1024, BUF_SIZE 65535, DEFAULT PKG_SIZE 8MB poll method support: poll, epoll_lt, epoll_et, sigio_rt, select. id: unknown compiled on 11:28:18 Mar 20 2018 with gcc 4.8.5 ```

* **Operating System**:

<!-- Details about the operating system, the type: Linux (e.g.,: Debian 8.4, Ubuntu 16.04, CentOS 7.1, ...), MacOS, xBSD, Solaris, ...; Kernel details (output of `uname -a`) -->

``` Linux localhost 3.10.0-693.21.1.el7.x86_64 #1 SMP Wed Mar 7 19:03:37 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux ```