Bjoern A. Zeeb wrote:
[good stuff snipped]
>Yes, could do easily but wouldn’t work for my above case, would it? I
>can help you with the code for v4 and jails if you help me with the code
>for IPv6?
Well, not quite what you volunteered to do, but can you fill in the INET6 code
for this code snippet? (It does what Alan suggested for INET.)
/*
* Find out what IP# localhost maps to and whether or not use of
* INET6 is required. Jails will map 127.0.0.1 to another INET
* address.
*/
use_inet6 = 0;
s = socket(PF_INET, SOCK_DGRAM, 0);
if (s < 0) {
use_inet6 = 1;
s = socket(PF_INET6, SOCK_DGRAM, 0);
}
if (s < 0)
err(1, "Can't create a inet/inet6 socket");
if (use_inet6 != 0) {
; /* Needs code... */
} else {
memset(&sad, 0, sizeof(sad));
sad.sin_len = sizeof(sad);
sad.sin_family = AF_INET;
sad.sin_addr.s_addr = inet_addr("127.0.0.1");
sad.sin_port = 0;
ret = bind(s, (struct sockaddr *)&sad, sizeof(sad));
if (ret > 0)
err(1, "Can't bind 127.0.0.1");
memset(&sad, 0, sizeof(sad));
slen = sizeof(sad);
ret = getsockname(s, (struct sockaddr *)&sad, &slen);
if (ret < 0)
err(1, "Can't get bound sockaddr");
printf("locaddr: %s\n", inet_ntoa(sad.sin_addr));
}
If the IPv4 code isn't sufficient, please let me know. (I think I know how to
make
the RPC code use IPv6, but I need to know what IPv6 address to use. I get
confused
by link local/site local/… It needs to be an address that is "this machine".
Thanks for your help with this, rick
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