To add-on to this discussion, I do not believe that the subnet " 55.55.0.25/16" is valid. The entire point of the netmask (in this case 16) is to denote the length of the network address in bits. A bitwise AND operation should always provide the routing prefix, in this case 55.55.0.0. A subnet with a non-zero value is only possible on orders of 2 and with an appropriately long netmask, e.g. 55.55.0.128/25.

On Thu, Nov 7, 2019 at 5:04 AM Murali Sb murali07smile@gmail.com wrote:

Thank you for your response. I'll try other way.

On Thu, 7 Nov, 2019, 6:23 PM 이석찬, acetcom@gmail.com wrote:

...

Hi Murali,

Unfortunately, open5gs(nextepc) does not support the range of the ip pool. As such, it is not possible at this time.

Let me paste the related source code regarding the issue.

Sorry for not being help this.

Best regards, Sukchan

---

In src/pgw/pgw-context.c, pgw_ue_pool_generate(), line 1207

       /* Exclude Network Address */
        if (memcmp(ue_ip->addr, subnet->sub.sub, maxbytes) == 0)

continue;

        /* Exclude Broadcast Address */
        if (memcmp(ue_ip->addr, broadcast, maxbytes) == 0) continue;

        /* Exclude TUN IP Address */
        if (memcmp(ue_ip->addr, subnet->gw.sub, maxbytes) == 0)

continue;

On Thu, Nov 7, 2019 at 4:42 PM Murali Sb murali07smile@gmail.com wrote:

...

Hi

In my project, I'm using IP address as 55.55.0.25/16 in nextepc.conf My tunnel inet gets 55.55.0.25 , mask is 255.255.0.0 IP address for my route from the pool is 55.55.0.1. Why is this happening?

I want my route to start from 55.55.0.26 and so on...

how to do this? please help

-- Murali.S