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.TH dns_mx_packet 3
dns_mx_packet \- extract MX records from DNS answer packet
.B #include <dns.h>
int \fBdns_mx_packet\fP(stralloc* \fIout\fR,const char* \fIbuf\fR,
unsigned int \fIlen\fR);
dns_mx_packet is a low-level component of dns_mx, designed to support
asynchronous DNS lookups. It reads a DNS packet of length \fIlen\fR from \fIbuf\fR,
extracts the MX records from the answer section of the packet, puts the
result into \fIout\fR, and returns 0 or -1 the same way as dns_mx.
dns_mx(3), dns_ip4(3), dns_ip6(3)