idbeta opened a new issue #2808:
URL: https://github.com/apache/apisix/issues/2808
### Issue description
```
apisix:
stream_proxy: # TCP/UDP proxy
tcp: # TCP proxy address list
- 9100
- 127.0.0.1:9101
udp: # UDP proxy address list
- 9200
- 127.0.0.1:9211
```
should be
```
apisix:
stream_proxy: # TCP/UDP proxy
tcp: # TCP proxy port list
- 9100
- 9101
udp: # UDP proxy port list
- 9200
- 9211
```
otherwise
```
nginx: [error] init_by_lua error:
.../apisix//deps/share/lua/5.1/tinyyaml.lua:641: failed to classify line:
127.0.0.1:9101
stack traceback:
[C]: in function 'error'
.../apisix//deps/share/lua/5.1/tinyyaml.lua:641: in function 'parsemap'
```
### Environment
* apisix version (cmd: `apisix version`): master
* OS:
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