network buffer size limits are enforced incorrectly and always overwrite tcp-receive-buffer

Summary

When enforcing limits for out of range values on configuration options tcp-send-buffer, udp-receive-buffer, udp-send-buffer, the enforced value always overwrite tcp-receive-buffer instead of the problematic value.

BIND version affected

v9.17.13 up to current main (33394f11)

Steps to reproduce

Configure one of tcp-send-buffer, udp-receive-buffer, udp-send-buffer with an out of range value (< 4096, > 2^32).

What is the current bug behavior?

• Limit >= 4096, <= 2^32 is not enforced on these three options.
• Allowed minimal/maximal value overwrites tcp-receive-buffer value!

What is the expected correct behavior?

Well, limits are enforced properly.

Relevant configuration files

options {
    tcp-send-buffer <an out of range value>;
    udp-receive-buffer <an out of range value>;
    udp-send-buffer <an out of range value>;
};