Dear Maintainer,

When executing tc -s class ls dev eth1 to view the statistics for the Traffic Control,
it's displaying 0 bits and 0pps. The actual rate seems to be active however.

root@nas:~# tc -s class ls dev eth1
class htb 1:1 root rate 12Mbit ceil 12Mbit burst 4Kb cburst 4Kb
 Sent 200619307 bytes 343473 pkt (dropped 0, overlimits 0 requeues 0)
 rate 0bit 0pps backlog 0b 0p requeues 0
 lended: 5539 borrowed: 0 giants: 0
 tokens: 42010 ctokens: 42010

class htb 1:10 parent 1:1 leaf 10: prio 1 rate 12Mbit ceil 12Mbit burst
4Kb cburst 4Kb
 Sent 1847501 bytes 27542 pkt (dropped 0, overlimits 0 requeues 0)
 rate 0bit 0pps backlog 0b 0p requeues 0
 lended: 27542 borrowed: 0 giants: 0
 tokens: 42093 ctokens: 42093

class htb 1:20 parent 1:1 leaf 20: prio 2 rate 11872Kbit ceil 12Mbit
burst 4Kb cburst 4Kb
 Sent 985635 bytes 3476 pkt (dropped 0, overlimits 0 requeues 0)
 rate 0bit 0pps backlog 0b 0p requeues 0
 lended: 3355 borrowed: 2 giants: 0
 tokens: 41482 ctokens: 41031

class htb 1:30 parent 1:1 leaf 30: prio 3 rate 11744Kbit ceil 12Mbit
burst 4Kb cburst 4Kb
 Sent 197786171 bytes 312455 pkt (dropped 0, overlimits 0 requeues 0)
 rate 0bit 0pps backlog 0b 0p requeues 0
 lended: 304302 borrowed: 5537 giants: 0
 tokens: 42933 ctokens: 42010