d55e243de2
subnet, and that host is down/turned off, the Tnm::icmp echo command will fail rather than return an unreachable indication on some occasions. This is because the nmicmpd program will occasionally get an EHOSTDOWN error when doing a sendto() when the ARP entry resolution times out. This is a problem since this API can support a list of hosts to send traffic to, and a single error as described will abort the entire operation. (The reviewer claims that he could not duplicate the problem, but that the patch seems like a good idea anyway.) PR: ports/24940 Submitted by: Louis Mamakos <louie@transsys.com> Reviewed by: Stefan Eßer <se@FreeBSD.org>
17 lines
496 B
C
17 lines
496 B
C
--- nmicmpd.c.orig Tue Feb 6 15:34:03 2001
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+++ nmicmpd.c Tue Feb 6 15:44:53 2001
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@@ -924,6 +924,14 @@
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if (rc != size) {
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if (rc < 0) {
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+ /*
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+ * If we get an EHOSTDOWN error, this probably means that
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+ * the the pending ARP entry has timed out for the host.
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+ * Just ignore the error, and attempt a normal retry.
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+ */
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+ if (errno == EHOSTDOWN)
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+ return 0;
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+
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PosixError("sendto failed");
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}
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job->status = ICMP_STATUS_GENERROR;
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