# Managing pi-hole DNS Server Anything to do with pi-hole DNS # DNSMASQ_WARN reducing DNS packet size ##### **Objective**: Get rid of the warnings in the Admin Web Interface "reducing DNS packet size for nameserver OpenDNS Resolver to 1280" **STEP 1**: ##### You can get rid of the warning by adding a config file like **`/etc/dnsmasq.d/99-edns.conf`** and using an editor like nano or vi, add the following line below: ```shell edns-packet-max=1280 ``` ##### **STEP 2**: ##### Then run `pihole restartdns` and your Pi-hole will not even try with larger packet sizes (our default is 4096). ```shell pihole restartdns ``` ##### More Information on the DNS Server accepted Maximum Packet sizes below:
Because this doesn't seem to be documented anywhere properly, I probed all the DNS servers currently offered by Pi-hole to find out their maximum DNS packet size:
##### Name | ##### Address | ##### Maximum packet size |
---|---|---|
Google (ECS) | `8.8.8.8` | 1400 |
`8.8.4.4` | 1400 | |
`2001:4860:4860:0:0:0:0:8888` | 1400 | |
`2001:4860:4860:0:0:0:0:8844` | 1400 | |
OpenDNS (ECS) | `208.67.222.222` | 1410 |
`208.67.220.220` | 1410 | |
`2620:0:ccc::2` | 1410 | |
`2620:0:ccd::2` | 1410 | |
Level3 | `4.2.2.1` | 8192 |
`4.2.2.2` | 8192 | |
Comodo | `8.26.56.26` | 4096 |
`8.20.247.20` | 4096 | |
DNS.WATCH | `84.200.69.80` | 4096 |
`84.200.70.40` | 4096 | |
`2001:1608:10:25:0:0:1c04:b12f` | 4096 | |
`2001:1608:10:25:0:0:9249:d69b` | 4096 | |
Quad9 (filtered, DNSSEC) | `9.9.9.9` | 1232 |
`149.112.112.112` | 1232 | |
`2620:fe::fe` | 1232 | |
`2620:fe::9` | 1232 | |
Quad9 (unfiltered, no DNSSEC) | `9.9.9.10` | 1232 |
`149.112.112.10` | 1232 | |
`2620:fe::10` | 1232 | |
`2620:fe::fe:10` | 1232 | |
Quad9 (filtered + ECS) | `9.9.9.11` | 512 |
`149.112.112.11` | 512 | |
`2620:fe::11` | 1232 | |
Cloudflare | `1.1.1.1` | 1452 |
`1.0.0.1` | 1452 | |
`2606:4700:4700::1111` | 1452 | |
`2606:4700:4700::1001` | 1452 |