Cloudflare 1.1.1.1 public DNS broken w/ AT&T CPE

Mon Apr 2 23:17:48 UTC 2018

On Mon, Apr 2, 2018 at 4:32 PM, Marty Strong <marty at cloudflare.com> wrote:

> Do you have one?
>

Yes, supplied by local broadband provider Vivo. FTTH GPON connection,
router with broadband and IPTV services.

> Do you know what is causing it to fail? i.e. IP on internal interface etc.
>

Interface table:

eth5.2 (WAN2) Static 10.200.a.b 255.255.128.0 10.200.0.1 Connected NONE
527220
eth5.3 (WAN4) DHCP       Unconfigured NONE 0
eth5.4 (WAN5) DHCP       Unconfigured NONE 0
ppp0.1/eth5.1 (WAN1) PPPoE 179.x.y.z 255.255.255.255 200.d.e.f Connected
NONE 527200
ppp1/wan3g (WAN3) PPPoE       Unconfigured NONE 0
LAN INTERFACE STATUS

Name
Status
IP Address
Subnet Mask
br0 Enable 192.168.1.1 255.255.255.0
br0:0 Enable 1.1.1.1 255.255.255.0

Routing table:

200.x.y.z 0.0.0.0 255.255.255.255 UH 0 ppp0.1
192.168.1.0 0.0.0.0 255.255.255.0 U 0 br0
1.1.1.0 0.0.0.0 255.255.255.0 U 0 br0
10.200.0.0 0.0.0.0 255.255.128.0 U 0 eth5.2
0.0.0.0 200.100.88.195 0.0.0.0 UG 0 ppp0.1

Rubens