Date: Fri, 25 Nov 2005 17:53:12 -0700 From: Dan Allen <danallen46@airwired.net> To: freebsd-net@freebsd.org Subject: cvs commit: src/sys/netinet if_ether.c Message-ID: <1389F11F-787F-40BE-AEEA-6352F530BE61@airwired.net>
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The following change appears to have crashed my network today. If I back up to the revision of src/sys/netinet/if_ether.c prior to this, my machine is fine, but otherwise it will not talk to my Netgear router's DHCP server properly and in fact it almost does a Denial of Service on the router! Every light on the router is on - the machine hangs at boot waiting for a DHCP address, and then it hangs again when sshd starts up. I am not a network guru (more of a compiler guy) but I think this change should be investigated or possibly backed out. If there are questions, feel free to email me. Dan Allen Building FreeBSD since 2.0... --- Commit by glebius on RELENG_6 :: src/sys/netinet/if_ether.c: MFC 1.145: Rework ARP retransmission algorythm so that ARP requests are retransmitted without suppression, while there is demand for such ARP entry. As before, retransmission is rate limited to one packet per second. Details: Remove net.link.ether.inet.host_down_time Do not set/clear RTF_REJECT flag on route, to avoid rt_check() returning error. We will generate error ourselves. Return EWOULDBLOCK on first arp_maxtries failed requests , and return EHOSTDOWN/EHOSTUNREACH on further requests. Retransmit ARP request always, independently from return code. Ratelimit to 1 pps.
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