Stuart, Thanks so much. I am using urlsnarf to log url requests and there is one instance running for each gre tunnel. I have a script that auto starts or stop one as soon as I added or removed a tunnel. So when I added a tunnel it would fire up a new instance breaking tcpdump. Removing the tunnel would kill an instance fixing tcpdump. I will have to figure out another way to get that data. Thanks for your help.
Carl -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Stuart Henderson Sent: Wednesday, September 24, 2008 1:55 PM To: misc@openbsd.org Subject: Re: Does OpenBSD only allow 19 Interfaces On 2008-09-24, Carl Horne <[EMAIL PROTECTED]> wrote: > I have put all my eggs in this basket so I am desperate to get this fixed. > This may only be a tcpdump issue. If I have 19 interfaces tcpdump works as > expected. If I have 20 or more it fails. > > First I try with 20 interfaces setup and I get: > # tcpdump -nttt -i bge0 > tcpdump: Failed to open bpf device for bge0: No such file or directory I can't replicate if I just create 30 lo* interfaces and run tcpdump.. do you have other tcpdump running? how many bpf are in use? (fstat|grep bpf) - you know they need device nodes in /dev and by default you get 10? > I need to have around 50 total interfaces to complete the project and I need > tcpdump. Pf still seems to find them for redirects so I am not sure if it's > an OS issue or a tcpdump issue. More likely tcpdump/bpf. I think it's highly probable that there are people here running with many more interfaces (at least vlan) than that. > OpenBSD xxxx.xxx.xxx 4.1 GENERIC.MP#1152 amd64 PF has improved greatly since 4.1, by the way.
