# kong 3.6.1

- Product: kong (https://whatsnew.fyi/product/kong)
- Vendor: Kong
- Date: 2024-03-04
- Version: 3.6.1
- Original notes: https://github.com/Kong/kong/releases/tag/3.6.1
- Permalink: https://whatsnew.fyi/product/kong/releases/3.6.1

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

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- **changed** — increase Opentelemetry queue max batch size to 200
- **changed** — bump lua-resty-openssl to 1.2.1
- **changed** — TLSv1.1 and lower is by default disabled in OpenSSL 3.x
- **fixed** — fix default value in kong.conf.default documentation from 1000 to 10000 for upstream_keepalive_max_requests option
- **fixed** — set security level of gRPC's TLS to 0 when ssl_cipher_suite is set to old
- **fixed** — fix missing router section for the output of the request-debugging
- **fixed** — revert the hard-coded limitation of the ngx.read_body() API in OpenResty upstreams' new versions when downstream connections are in HTTP/2 or HTTP/3 stream modes
- **fixed** — fix bug where low ulimit setting causes Kong to fail to start by decreasing lua-resty-timer-ng concurrency range from [512, 2048] to [256, 1024]

###### Kong


###### Performance
###### Plugin

- **Opentelemetry**: increase queue max batch size to 200
 [#12542](https://github.com/Kong/kong/issues/12542)



###### Dependencies
###### Core

- Bumped lua-resty-openssl to 1.2.1
 [#12669](https://github.com/Kong/kong/issues/12669)


###### Features
###### Configuration

- now TLSv1.1 and lower is by default disabled in OpenSSL 3.x
 [#12556](https://github.com/Kong/kong/issues/12556)

###### Fixes
###### Configuration

- Fixed default value in kong.conf.default documentation from 1000 to 10000
for upstream_keepalive_max_requests option.
 [#12648](https://github.com/Kong/kong/issues/12648)

- Set security level of gRPC's TLS to 0 when ssl_cipher_suite is set to old
 [#12616](https://github.com/Kong/kong/issues/12616)

###### Core

- Fix the missing router section for the output of the request-debugging
 [#12649](https://github.com/Kong/kong/issues/12649)

- revert the hard-coded limitation of the ngx.read_body() API in OpenResty upstreams' new versions when downstream connections are in HTTP/2 or HTTP/3 stream modes.
 [#12666](https://github.com/Kong/kong/issues/12666)
###### Default

- Fix a bug where the ulimit setting (open files) is low Kong will fail to start as the lua-resty-timer-ng exhausts the available worker_connections. Decrease the concurrency range of the lua-resty-timer-ng library from [512, 2048] to [256, 1024] to fix this bug.
 [#12608](https://github.com/Kong/kong/issues/12608)
###### Kong-Manager