[SR-Users] subnet match

[Hugh Waite]

Hi,
It looks from the code that the subnet IP address must be masked.
https://github.com/kamailio/kamailio/blob/master/src/modules/ipops/ipops_mod.c#L393

if ((ip->s_addr & ipv4_mask) == net_addr.s_addr)
return 1;
return 0;

So 10.1.1.0/24 will match 10.1.1.241
but 10.1.1.128/24 will NOT match 10.1.1.241

Regards,
Hugh

On 14 March 2018 at 12:39, Daniel-Constantin Mierla <miconda at gmail.com>
wrote:

> Hello,
>
> maybe it is what Hugh said in his response, respectively that the subnet
> needs to have the lowest bits masked.
>
> Can you run with debug=3? Maybe ipops module writes more debug message
> to track it.
>
> Cheers,
> Daniel
>
>
> On 14.03.18 13:33, volga629 at networklab.ca wrote:
> > Hello Daniel,
> > I adjusted var to $dd and still not match
> >
> >        if(is_method("INVITE")) {
> >                #$avp(destIP)=$(du{s.select,1,:});
> >                #$avp(subnet) = $avp(destIP) + "/16";
> >                #xlog("L_INFO", "Initial Request: [$rm] destination ip
> > [$avp(destIP)] and sourceip [$si]\n");
> >                xlog("L_INFO", "Initial Request: [$rm] destination ip
> > [$dd] and sourceip [$si]\n");
> >                if(!is_in_subnet("$si", "$dd/16")) {
> >                        xlog("L_INFO", "Subnets not match processing
> > rtp...destination ip [$dd] and source ip [$si]\n");
> >                        route(RTP_MANAGE);
> >                }
> >        }
> >
> >
> > Mar 14 13:21:06 sbc00 /usr/sbin/kamailio[1104]: {1 2 INVITE
> > Edz14KmQgLQpO5L323Wodw..} INFO: <script>: Initial Request: [INVITE]
> > destination ip [10.0.1.241] and sourceip [10.0.1.242]
> > Mar 14 13:21:06 sbc00 /usr/sbin/kamailio[1104]: {1 2 INVITE
> > Edz14KmQgLQpO5L323Wodw..} INFO: <script>: Subnets not match processing
> > rtp...destination ip [10.0.1.241/16] and source ip [10.0.1.242]
> >
> >
> > Slava
> >
> > On Wed, Mar 14, 2018 at 6:19 AM, Daniel-Constantin Mierla
> > <miconda at gmail.com> wrote:
> >> Hello,
> >>
> >>
> >> On 14.03.18 00:19, volga629 at networklab.ca wrote:
> >>>  Hello Everyone,
> >>>  Not sure what I am missing, but can't match ip address to subnet
> >>>
> >>>  Log says
> >>>
> >>>   INFO: <script>: Subnets not match processing rtp...destination ip
> >>>  [10.0.1.242] and sourceip [10.0.1.241]
> >>>
> >>>
> >>>         if(is_method("INVITE")) {
> >>>                 $avp(destip)=$(du{s.select,1,:});
> >>>                 $avp(subnet) = $avp(destip) + "/16";
> >> if you want to get the host part (ip) of the $du, then just use $dd.
> >>
> >>>                 xlog("L_INFO", "Initial Request: [$rm] destination ip
> >>>  [$avp(destip)] and sourceip [$si]\n");
> >>>                 if(!is_in_subnet("$si", "$avp(subnet)")) {
> >>
> >> So instead of the above if, get rid of the avps and you can just use:
> >>
> >>                if(!is_in_subnet("$si", "$dd/16")) {
> >>
> >> Cheers,
> >> Daniel
> >>>                         xlog("L_INFO", "Subnets not match processing
> >>>  rtp...destination ip [$avp(subnet)] and source ip [$si]\n");
> >>>                         route(RTP_MANAGE);
> >>>                 }
> >>>         }
> >>>
> >>>
> >>>
> >>>  [root at prx00 ~]# rpm -qa | grep kamailio
> >>>  kamailio-mysql-5.1.2-2.git4c840b7e9.fc27.x86_64
> >>>  kamailio-5.1.2-2.git4c840b7e9.fc27.x86_64
> >>>
> >>>
> >>>  Slava.
> >>>
> >>>
> >>>  _______________________________________________
> >>>  Kamailio (SER) - Users Mailing List
> >>>  sr-users at lists.kamailio.org
> >>>  https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
> >>
> >> --
> >> Daniel-Constantin Mierla
> >> www.twitter.com/miconda -- www.linkedin.com/in/miconda
> >> Kamailio Advanced Training - April 16-18, 2018, Berlin - www.asipto.com
> >> Kamailio World Conference - May 14-16, 2018 - www.kamailioworld.com
> >>
> >>
> >
>
> --
> Daniel-Constantin Mierla
> www.twitter.com/miconda -- www.linkedin.com/in/miconda
> Kamailio Advanced Training - April 16-18, 2018, Berlin - www.asipto.com
> Kamailio World Conference - May 14-16, 2018 - www.kamailioworld.com
>
>
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