This seems sufficient for ifup and ifdown to actually work
as advertised. Works for me (at least with glibc)
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@@ -47,6 +47,8 @@ void ip_parse_common_args(int *argcp, char ***argvp)
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if (matches(opt, "-family") == 0) {
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argc--;
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argv++;
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if (! argv[1])
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show_usage();
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if (strcmp(argv[1], "inet") == 0)
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preferred_family = AF_INET;
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else if (strcmp(argv[1], "inet6") == 0)
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@@ -524,8 +524,10 @@ extern int ipaddr_list_or_flush(int argc, char **argv, int flush)
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exit(1);
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}
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if (filter.flushed == 0) {
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#if 0
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if (round == 0)
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fprintf(stderr, "Nothing to flush.\n");
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#endif
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fflush(stdout);
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return 0;
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}
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