Date: Sun, 07 Aug 2005 13:43:50 -0400 From: Chuck Swiger <cswiger@mac.com> To: Subscribers to FreeBSD-Stable <freebsd-stable@FreeBSD.org> Subject: Re: dhclient: send_packet: No buffer space available Message-ID: <42F64856.2010506@mac.com> In-Reply-To: <42F62DDD.8000902@pp.nic.fi> References: <42E12A3B.8040804@pp.nic.fi> <42F62DDD.8000902@pp.nic.fi>
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Pertti Kosunen wrote: > Pertti Kosunen wrote: >> What could cause dhclient sometimes to fail renew the lease? I updated >> world and moved to pf from ipfw same time so i don't know which to blame. >> >> This happens from twice a day to every few days. >> >> Jul 21 03:44:55 myserver dhclient: send_packet: No buffer space available >> Jul 21 03:44:55 myserver dhclient: send_packet: No buffer space available >> Jul 21 03:45:02 myserver dhclient: New IP Address (xl0): x.x.x.x >> Jul 21 03:45:02 myserver dhclient: New Subnet Mask (xl0): 255.255.254.0 >> Jul 21 03:45:02 myserver dhclient: New Broadcast Address (xl0): x.x.x.x >> Jul 21 03:45:02 myserver dhclient: New Routers: x.x.x.x >> >> Pf.conf & dmesg: >> http://www.saunalahti.fi/~pkosunen/pf.conf >> http://www.saunalahti.fi/~pkosunen/dmesg > > > Anyone know what what could be the problem with dhclient? Some buffer is > full but what? > > Nic is 3Com 3c905B-TX, FreeBSD 5.4-STABLE & PF. Typically, that sort of message indicates that the firewall rules are preventing traffic from going out, or packets are getting stuck in a queue until it fills up, or maybe even a bug somewhere in the particular combination of kernel firewall options enabled, high optimization or CPUTYPE settings, and your particular hardware, depending on how lucky you are. :-) Does the problem go away if you use a trivial "permit all" PF ruleset? Does the problem go away if you use a trivial IPFW "permit all" instead of PF? Does the problem go away if you use a stock 5.4 release kernel? The 3Com 3c905B-TX is an OK NIC, apparently the later C revision or the 918/920's are pretty decent, but anyway-- ...does the problem go away if you switch to another (known good) NIC? -- -Chuck
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