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Log DNS server max packet size reduction.

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This commit is contained in:
Simon Kelley
2017-10-13 22:54:00 +01:00
parent 6fd5d79e73
commit 22dee512f3
1 changed files with 5 additions and 1 deletions
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4
src/forward.c
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@@ -845,7 +845,11 @@ void reply_query(int fd, int family, time_t now)
only do this when we get a truncated answer, or one larger than the safe size. */
if (server && (forward->flags & FREC_TEST_PKTSZ) &&
((header->hb3 & HB3_TC) || n >= SAFE_PKTSZ))
{
server->edns_pktsz = SAFE_PKTSZ;
prettyprint_addr(&server->addr, daemon->addrbuff);
my_syslog(LOG_WARNING, _("reducing DNS packet size for nameserver %s to %n"), daemon->addrbuff, SAFE_PKTSZ);
}
/* If the answer is an error, keep the forward record in place in case
we get a good reply from another server. Kill it when we've