pfctl: Call ifa_load() before ifa_grouplookup()
ifa_grouplookup() uses the data loaded in ifa_load() (through is_a_group()), so
we must call ifa_load() before we can rely on any of the data it populates.
Submitted by: Nick Rogers
MFC after: 1 week
Sponsored by: RG Nets
(cherry picked from commit 8fd675d8a0
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@ -1456,15 +1456,16 @@ ifa_lookup(char *ifa_name, int flags)
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int got4 = 0, got6 = 0;
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const char *last_if = NULL;
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/* first load iftab and isgroup_map */
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if (iftab == NULL)
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ifa_load();
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if ((h = ifa_grouplookup(ifa_name, flags)) != NULL)
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return (h);
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if (!strncmp(ifa_name, "self", IFNAMSIZ))
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ifa_name = NULL;
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if (iftab == NULL)
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ifa_load();
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for (p = iftab; p; p = p->next) {
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if (ifa_skip_if(ifa_name, p))
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continue;
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