Set DNS resolver options in autogenerated resolver configuration

[olliefr]

Is your feature request related to a problem? Please describe.
I would like to configure the timeout and the retry attempts for a DNS resolver which is using autogenerated /etc/resolver.conf.

Describe the solution you'd like
I suppose that an extra parameter for wsl.conf section network would solve this.

It could be named resolvConfOptions and its type would be string.

The value would be added to the autogenerated /etc/resolv.conf as options ...

Example wsl.conf:

[network]
generateResolvConf = true
resolvConfOptions = "timeout:1 attempts:3"

This would produce the following example /etc/resolv.conf:

# This file was automatically generated by WSL. To stop automatic generation of this file, add the following entry to /etc/wsl.conf:
# [network]
# generateResolvConf = false

# ... nameserver, search, etc here

options timeout:1 attempts:3

Describe alternatives you've considered
To the best of my knowledge, the only alternative at the moment is to turn off auto-generation and manage /etc/resolv.conf manually. This does not sound appealing as network settings and DNS server addresses do change.

[github-actions]

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View similar issues

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Closed similar issues:

• Allow resolv.conf personalization via adding wsl.conf parameter "Link to personal nameserver list" (#6399), similarity score: 0.76

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[olliefr]

/feature

[github-actions]

Diagnostic information

Found '/feature', adding tag 'feature'

[zcobol]

@olliefr resolve.h has very sane defaults, i.e. RES_TIMEOUT set to 5 sec. Do you really want to change it to 1 sec? Your resolver might miss a lot of responses!

[olliefr]

Do you really want to change it to 1 sec?

Yes, I do 😈

Your resolver might miss a lot of responses!

I'll fire it and get a better one, then! 😉