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FreeBSD: dhcpd: Can't find free bpf: No such file or directory
Problem:
On a FreeBSD DHCP server with lots of subnets, we got the following error when trying to start dhcpd: dhcpd: Can't find free bpf: No such file or directory
 
Solution:
Make sure you have the appropriate /dev/bpf* entries. Use 'sh MAKEDEV bpf0 bpf1 bpf2 bpf3' etc. to create them if not present. (Note that in 4.2 this seems to have been done by default.)
 
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