trace packets that are sent outside of a connection

[marten-seemann]

No description provided.

[codecov]

Codecov Report

Merging #2675 into master will increase coverage by 0.02%.
The diff coverage is 94.74%.

@@            Coverage Diff             @@
##           master    #2675      +/-   ##
==========================================
+ Coverage   86.73%   86.74%   +0.02%     
==========================================
  Files         124      124              
  Lines        9878     9897      +19     
==========================================
+ Hits         8567     8585      +18     
- Misses        977      978       +1     
  Partials      334      334              

Impacted Files	Coverage Δ
qlog/qlog.go	95.31% <0.00%> (-0.37%)	⬇️
logging/multiplex.go	95.24% <100.00%> (+0.18%)	⬆️
server.go	84.15% <100.00%> (+0.68%)	⬆️

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