net/udp: add option WithMulticastInterfaceError

[jkralik]

No description provided.

[codecov-commenter]

Codecov Report

Merging #332 (c2b4ec1) into master (6cb0f09) will decrease coverage by 0.21%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master     #332      +/-   ##
==========================================
- Coverage   69.10%   68.89%   -0.22%     
==========================================
  Files          67       67              
  Lines        5600     5562      -38     
==========================================
- Hits         3870     3832      -38     
- Misses       1325     1327       +2     
+ Partials      405      403       -2     

Impacted Files	Coverage Δ
net/connUDP.go	62.34% <0.00%> (-1.56%)	⬇️
net/options.go	47.05% <0.00%> (-6.28%)	⬇️
tcp/clientobserve.go	66.38% <0.00%> (-0.85%)	⬇️
udp/client/clientconn.go	71.64% <0.00%> (-0.13%)	⬇️
udp/client/client.go	10.44% <0.00%> (-0.08%)	⬇️
udp/optionmux.go	100.00% <0.00%> (ø)
udp/message/message.go	67.18% <0.00%> (+0.52%)	⬆️
tcp/message/message.go	68.54% <0.00%> (+0.52%)	⬆️
tcp/optionmux.go	88.23% <0.00%> (+3.61%)	⬆️

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[sonarcloud]

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[HRogge]

This is a really nice way to "rescue" the errors from the inner loop.