Trim nameserver line in resolv.conf before parsing

[cyqsimon]

Currently, a line like this in /etc/resolv.conf will cause the name server to not be picked up:

nameserver    1.1.1.1

Trimming the string before parsing fixes that.

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P.s. it is worth discussing whether this is a valid configuration at all. (I.e. is multiple spaces actually allowed?)

So I took a look at the man page, and only found this small paragraph addressing the format:

The keyword and value must appear on a single line, and the keyword (e.g., nameserver) must start the line. The value follows the keyword, separated by white space.

Yeah... The description is very ambiguous - it didn't say either "a white space" or "one or more white spaces". On the other hand, dig seems to be okay with multiple white spaces, so I think it's best to be defensive and trim first. There's no real downsides so why not.