*bufsize* - sizes EDNS0 buffer size to prevent IP fragmentation.
## Description
*bufsize* limits a requester's UDP payload size.
*bufsize* limits a requester's UDP payload size.
It prevents IP fragmentation so that to deal with DNS vulnerability.
## Syntax
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@@ -11,8 +11,8 @@ It prevents IP fragmentation so that to deal with DNS vulnerability.
bufsize [SIZE]
```
**[SIZE]** is an int value for setting the buffer size.
The default value is 512, and the value must be within 512 - 4096.
**[SIZE]** is an int value for setting the buffer size.
The default value is 512, and the value must be within 512 - 4096.
Only one argument is acceptable, and it covers both IPv4 and IPv6.
## Examples
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@@ -36,4 +36,4 @@ Enable limiting the buffer size as an authoritative nameserver:
## Considerations
- Setting 1232 bytes to bufsize may avoid fragmentation on the majority of networks in use today, but it depends on the MTU of the physical network links.
- For now, if a client does not use EDNS, this plugin adds OPT RR.
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- For now, if a client does not use EDNS, this plugin adds OPT RR.
