I can't find a page that details whats legal syntax for traefik rules. Today I discovered that HostSNI only accepts a `` enclosed strings for example - a style of string quoting i've seen in various samples but not seen explained, and Host & HostRegEx seem to accept "" and '' enclosed strings as one would expect.
Backticks or Quotes?
To set the value of a rule, use backticks ` or escaped double-quotes \" .
Single quotes
'are not accepted as values are Golang's String Literals.