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Can I use confstr to configure two nameservers?

I am trying to set up two dynamic nameserver IPs on my QNX system. I was able to use confstr to configure the address by setting the line _nameserver=xxx.xxx.xxx.xxx

to _CS_RESOLVE. Res_search then returns the correct IP address for the given name. I actually have two questions:

  • How do I set up two nameservers (primary and secondary) using setconf?

  • If the IP addresses of the nameserver change, can I just call setconf again to change them while my application is running?

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According to the QNX docs , your confstr () parameter should contain:

nameserver_1.2.3.4
nameserver_5.6.7.8


(i.e. one line per nameserver with a maximum of three)

If the nameservers change, you probably need to call res_init()

to force the resolver library to use the new settings.

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