This function is a wrapper function for ldns_get_rr_list_name_by_addr
and ldns_get_rr_list_addr_by_name. It's name is from the getaddrinfo()
library call. It tries to mimic that call, but without the lowlevel
stuff.
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res: The resolver. If this value is NULL then a resolver will
be created by ldns_getaddrinfo.
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node: the name or ip address to look up
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c: the class to look in
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list: put the found RR's in this list
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Returns the number of RR found.
AUTHOR
The ldns team at NLnet Labs. Which consists out of
Jelte Jansen and Miek Gieben.