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18 lines
643 B
Groff
18 lines
643 B
Groff
.TH dns_name6 3
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.SH NAME
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dns_name6 \- look up host name
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.SH SYNTAX
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.B #include <dns.h>
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int \fBdns_name6\fP(stralloc* \fIout\fR,const char* \fIip\fR[16]);
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.SH DESCRIPTION
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dns_name6 looks up the domain name for the 16-byte IPv6 address in \fIip\fR. It
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puts the (first) domain name into \fIout\fR and returns 0. If the relevant
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ip6.arpa domain does not exist in DNS, or has no PTR records, \fIout\fR
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will be empty.
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If dns_name6 has trouble with the DNS lookup or runs out of memory, it returns
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-1, setting errno appropriately. It may or may not change \fIout\fR.
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.SH "SEE ALSO"
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dns_name_packet(3), dns_name6_domain(3), dns_name4(3), dns_ip6(3)
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