Rm520n-gl (a08) rgmii ipv6 passthrough

Technical Subjects
1

Did anyone here successfully tried to passthrough public IPV6?

My current config is this:
RGMII:

AT+QETH="ipptmac",XX:XX:XX:XX:XX:XX (where XX is my actual WAN MAC)
AT+QETH="RGMII","ENABLE",1,1

It works and I can receive public IPV4 from my modem, however, theres no WAN IPV6 even though I can see it being assigned on my modem (AT+CGCONTRDP=1)

AT+QMAP also works for me but I disabled it since the IPV6 wasn’t also working so I tried RGMII mode and sticked with it for now.

QMAP:

AT+QMAP="MPDN_RULE",0,1,0,1,1,"FF:FF:FF:FF:FF:FF"

Current Setup:

Modem: RM520N-GL
Router: DIR-AX5460 (WAN ipv6 auto detect)
2

It looks like your modem is connected via Ethernet, so I suggest to connect your PC directly to the modem and see if it can obtain any IPv6 address.

Please send AT+CGPIAF=1,1,1,0 once and then show the output of:

AT+CGPADDR
AT+CGCONTRDP=1
4

IPCONFIG returns

Ethernet adapter Ethernet:

   Connection-specific DNS Suffix  . :
   IPv4 Address. . . . . . . . . . . : 100.6*.***.1**
   Subnet Mask . . . . . . . . . . . : 255.255.255.240
   Default Gateway . . . . . . . . . : 100.6*.***.1**

AT+CGCONTRDP=1 returns:

AT+CGCONTRDP=1

+CGCONTRDP: 1,0,"internet.dito.ph","100.6*.***.1**",
"2405:8D40:44D8:146F:1786:92C3:416D:6C63", "FE80:0000:0000:0000:0000:0000:0000:0001","
131.226.73.19","10.2.14.183" "2405:8D40:0A07:0001:0000:0000:0000:0021"
5

Do you have IPv6 enabled on this Ethernet adapter?
You don’t even have Link-local IPv6 Address mentioned in ipconfig output, so check the interface configuration.
There is no real need in masking private addresses like ones from 100.64.0.0/10 range.

6

I think theres no way to toggle ipv6 on my Ethernet device. It runs on RGMMI mode and the only settings that I can access are AT commands and built in TTL running on a lightweight httpd server stored on the module itself.

On the laptop itself, I can also receive ipv6 automatically on my local router.

7

UPDATE: I tried it again and heres the ipconfig result:

Note: Ipv4 shows 192.168.225.1 since I haven't been able to changed the IPPT MAC add. However, the test-ipv6 still returns 10/10.

Ethernet adapter Ethernet:

   Connection-specific DNS Suffix  . :
   IPv6 Address. . . . . . . . . . . : 2405:8d40:44d8:146f:e515:5e48:643a:9da8
   Temporary IPv6 Address. . . . . . : 2405:8d40:44d8:146f:b4f2:ef95:2d4f:eb76
   Link-local IPv6 Address . . . . . : fe80::2b46:dd66:e14f:4b8b%11
   IPv4 Address. . . . . . . . . . . : 192.168.225.95
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Default Gateway . . . . . . . . . : fe80::a44f:81ff:fe79:287b%11
                                       fe80::bc11:462c:661d:223d%11
                                       192.168.225.1

So the router must be the one causing the problem.
Heres the available IPv6 options on my router:

> Auto Detection
> Static IPv6
> Auto Configuration (SLAAC / DHCPv6)
> PPPoE
> 6rd
> Local Connectivity Only

I really appreciate your help. Hope I can get this fixed.

8

Well, you confirmed that the modem works well, so the issue is probably with the router.
Logically, it should be Auto Configuration (SLAAC / DHCPv6).

1 Like
9

Thats what I thought too. I just contacted Dlink for now.