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Thread-Topic: Looking for C example of ARP lookup on FreeBSD
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From: "Laslett, Greg" <greglas@calm.wa.gov.au>
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Subject: Looking for C example of ARP lookup on FreeBSD
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Hi,

The code that is being ported uses the 'ioctl' method to request a MAC =
address.
eg:
    struct arpreq            ReqARP;
    struct sockaddr_in  *pAddr_in;
    SOCKET                 s;
    .
    .
    s =3D socket(AF_INET, SOCK_DGRAM, 0);
    ioctl(s, SIOCGARP, &ReqARP);
    .
    .

This does not appear to be supported under FreeBSD.  Presumably a sysctl =
or other mechanism exists.

Can anyone provide a code fragment showing IP4 to MAC address =
translation.

Thanks,
Greg.