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pcap_open_live(vlan2): vlan2: (all BPF devices are busy)

Posted 06-25-2013 at 03:42 PM by rocket357

I can haz iftop x 5?

No, apparently not.

Code:
# lsof | grep bpf                                                       
iftop      1106    _iftop    4u    VCHR       23,5        0t0   58522 /dev/bpf5
dhclient  10196      root    5u    VCHR       23,9 0t15376716   58526 /dev/bpf9
iftop     10521    _iftop    4u    VCHR       23,8 0t30713975   58525 /dev/bpf8
dhclient  10789     _dhcp    5u    VCHR       23,9 0t15376716   58526 /dev/bpf9
pflogd    12994      root    3u    VCHR       23,1 0t96895490   58518 /dev/bpf1
dhcpd     17661     _dhcp    5u    VCHR       23,2    0t60916   58519 /dev/bpf2
dhcpd     17661     _dhcp    6u    VCHR       23,3   0t945912   58520 /dev/bpf3
dhcpd     17661     _dhcp    7u    VCHR       23,6  0t1506978   58523 /dev/bpf6
dhcpd     17661     _dhcp    8u    VCHR       23,7    0t23868   58524 /dev/bpf7
iftop     18968    _iftop    4u    VCHR       23,0 0x9d09dcfe   58517 /dev/bpf0
iftop     21269    _iftop    4u    VCHR       23,4  0t6371829   58521 /dev/bpf4
pflogd    32614   _pflogd    3u    VCHR       23,1 0t96895490   58518 /dev/bpf1

# ls -lh /dev/bpf*
crw-------  1 root  wheel   23,   0 Jun  5 12:03 /dev/bpf0
crw-------  1 root  wheel   23,   1 May 10 00:06 /dev/bpf1
crw-------  1 root  wheel   23,   2 Jun 25 01:30 /dev/bpf2
crw-------  1 root  wheel   23,   3 Jun 25 14:34 /dev/bpf3
crw-------  1 root  wheel   23,   4 May 10 00:06 /dev/bpf4
crw-------  1 root  wheel   23,   5 Jun 23 15:30 /dev/bpf5
crw-------  1 root  wheel   23,   6 Jun 25 14:29 /dev/bpf6
crw-------  1 root  wheel   23,   7 Jun 25 14:29 /dev/bpf7
crw-------  1 root  wheel   23,   8 Jun 23 15:30 /dev/bpf8
crw-------  1 root  wheel   23,   9 Jun 25 14:29 /dev/bpf9
Hrmmm...methinks I found the problem.

Code:
# mknod bpf10 c 23 10
# mknod bpf11 c 23 11
# ls -lh /dev/bpf*    
crw-------  1 root  wheel   23,   0 Jun  5 12:03 /dev/bpf0
crw-------  1 root  wheel   23,   1 May 10 00:06 /dev/bpf1
crw-r--r--  1 root  wheel   23,  10 Jun 25 14:35 /dev/bpf10
crw-r--r--  1 root  wheel   23,  11 Jun 25 14:40 /dev/bpf11
crw-------  1 root  wheel   23,   2 Jun 25 01:30 /dev/bpf2
crw-------  1 root  wheel   23,   3 Jun 25 14:34 /dev/bpf3
crw-------  1 root  wheel   23,   4 May 10 00:06 /dev/bpf4
crw-------  1 root  wheel   23,   5 Jun 23 15:30 /dev/bpf5
crw-------  1 root  wheel   23,   6 Jun 25 14:29 /dev/bpf6
crw-------  1 root  wheel   23,   7 Jun 25 14:29 /dev/bpf7
crw-------  1 root  wheel   23,   8 Jun 23 15:30 /dev/bpf8
crw-------  1 root  wheel   23,   9 Jun 25 14:29 /dev/bpf9
Err...whoops...

Code:
# chmod 600 /dev/bpf10                                                                        
# chmod 600 /dev/bpf11 
# ls -lh /dev/bpf*      
crw-------  1 root  wheel   23,   0 Jun  5 12:03 /dev/bpf0
crw-------  1 root  wheel   23,   1 May 10 00:06 /dev/bpf1
crw-------  1 root  wheel   23,  10 Jun 25 14:35 /dev/bpf10
crw-------  1 root  wheel   23,  11 Jun 25 14:40 /dev/bpf11
crw-------  1 root  wheel   23,   2 Jun 25 01:30 /dev/bpf2
crw-------  1 root  wheel   23,   3 Jun 25 14:34 /dev/bpf3
crw-------  1 root  wheel   23,   4 May 10 00:06 /dev/bpf4
crw-------  1 root  wheel   23,   5 Jun 23 15:30 /dev/bpf5
crw-------  1 root  wheel   23,   6 Jun 25 14:29 /dev/bpf6
crw-------  1 root  wheel   23,   7 Jun 25 14:29 /dev/bpf7
crw-------  1 root  wheel   23,   8 Jun 23 15:30 /dev/bpf8
crw-------  1 root  wheel   23,   9 Jun 25 14:29 /dev/bpf9
Now I can iftop all of the things. Yay!
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