- exec('tc class del dev "%s" classid 1:%s' % {device, id})
- exec('tc filter del dev "%s" parent 1:0 prio 1' % device) -- ipv6 rule
- --exec('tc qdisc del dev "%s" parent 1:%s sfq perturb 10' % { device, id })
+ exec('tc class del dev %s classid 1:%s' % { esc(device), esc(id) })
+ exec('tc filter del dev %s parent 1:0 prio 1' % esc(device)) -- ipv6 rule
+ --exec('tc qdisc del dev %s parent 1:%s sfq perturb 10' % { esc(device), esc(id) })