The provider that i use, supports pppoe-passthrough. So i attached my Openwrt router and i am getting an IPv4/IPv6 address, not CGnat. My port forwards work fine and all of the services that i use.
There are a few issues with delay though. slight delay to open the web pages, in overall speed, increased time in ping to www.google.com, viber attachments, email attachments.
I tried to change the MTU size on the pppoe interface of Openwrt from the default to different values as low as 1300, without any changes.
Any suggestions, ideas, please?
If you use Linux on a machine, can use dnseval to check latency on several DNS servers.
Make sure your DNS server is in the list.
sudo apt install dnsdiag
cat <<EOF > /tmp/dns.txt
1.0.0.1
1.1.1.1
4.2.2.1
4.2.2.2
4.2.2.3
4.2.2.4
8.8.4.4
8.8.8.8
208.67.220.220
208.67.222.222
209.244.0.3
EOF
dnseval -t A -f /tmp/dns.txt -c40 microsoft.com
server avg(ms) min(ms) max(ms) stddev(ms) lost(%) ttl flags response
----------------------------------------------------------------------------------------------------------------------
1.0.0.1 7.439 6.710 8.495 0.406 %0 923 QR -- -- RD RA -- -- NOERROR
1.1.1.1 8.050 6.866 14.409 1.533 %0 1022 QR -- -- RD RA -- -- NOERROR
4.2.2.1 6.901 6.289 10.272 0.701 %0 3169 QR -- -- RD RA -- -- NOERROR
4.2.2.2 6.924 6.200 8.923 0.706 %0 3169 QR -- -- RD RA -- -- NOERROR
4.2.2.3 7.654 6.341 25.971 3.196 %0 155 QR -- -- RD RA -- -- NOERROR
4.2.2.4 7.000 6.245 13.368 1.153 %0 1102 QR -- -- RD RA -- -- NOERROR
8.8.4.4 7.578 6.472 14.265 1.501 %0 1867 QR -- -- RD RA -- -- NOERROR
8.8.8.8 7.397 6.478 14.281 1.328 %0 1527 QR -- -- RD RA -- -- NOERROR
208.67.220.220 7.648 7.063 8.869 0.475 %0 3052 QR -- -- RD RA -- -- NOERROR
208.67.222.222 7.624 7.010 11.009 0.725 %0 2116 QR -- -- RD RA -- -- NOERROR
209.244.0.3 7.102 6.329 13.489 1.136 %0 1100 QR -- -- RD RA -- -- NOERROR
problem is present when i am NOT using the ISP's DNS
Good case: If i use the ISP's DNS
Bad case: If i use any of the following DNS servers 1.1.1.1, 8.8.8.8, 8.8.4.4, 1.0.0.1, 9.9.9.9
Here are the DNS diagnostics from my LAN:
So how do i bypass the ISP's DNS without having the issue i do mention above?