feat(instance): routed ip support

[Codelax]

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Relates OR Closes #0000

Release note for CHANGELOG:

[codecov-commenter]

Codecov Report

Merging #3297 (b2913c3) into master (b2aa437) will increase coverage by 0.00%.
Report is 1 commits behind head on master.
The diff coverage is 80.35%.

@@           Coverage Diff           @@
##           master    #3297   +/-   ##
=======================================
  Coverage   75.62%   75.63%           
=======================================
  Files         171      171           
  Lines       38121    38160   +39     
=======================================
+ Hits        28828    28861   +33     
- Misses       8252     8257    +5     
- Partials     1041     1042    +1     

Files Changed	Coverage Δ
internal/human/marshal_func.go	35.81% <0.00%> (-0.75%)	⬇️
...nal/namespaces/instance/v1/custom_server_create.go	81.27% <76.00%> (-0.18%)	⬇️
internal/namespaces/instance/v1/custom.go	98.22% <100.00%> (+0.01%)	⬆️
internal/namespaces/instance/v1/custom_server.go	80.06% <100.00%> (+0.47%)	⬆️