Hi Nikolay The man page says that the bridge forward_delay is in units of seconds, and should be between 2 and 30. I've tested on a couple of different kernel versions, and this appears to be not working correctly: ip link set br0 type bridge forward_delay 2 RTNETLINK answers: Numerical result out of range ip link set br0 type bridge forward_delay 199 RTNETLINK answers: Numerical result out of range ip link set br0 type bridge forward_delay 200 # ip link set br0 type bridge forward_delay 3000 # ip link set br0 type bridge forward_delay 3001 RTNETLINK answers: Numerical result out of range I've not checked what delay is actually being used here, but clearly something is mixed up. grep HZ .config CONFIG_HZ_PERIODIC=y # CONFIG_NO_HZ_IDLE is not set # CONFIG_NO_HZ_FULL is not set # CONFIG_NO_HZ is not set CONFIG_HZ_FIXED=0 CONFIG_HZ_100=y # CONFIG_HZ_200 is not set # CONFIG_HZ_250 is not set # CONFIG_HZ_300 is not set # CONFIG_HZ_500 is not set # CONFIG_HZ_1000 is not set CONFIG_HZ=100 Thanks Andrew
