Re: Prioritizing between wwan and wlan

[Marius Kotsbak <marius kotsbak com>]

2012/10/29 Marius Kotsbak <marius kotsbak com>

Both wlan and 3G connected:

marius@marius-T1005:~$ route -n

Kernel IP routing table

Destination     Gateway         Genmask         Flags Metric Ref    Use Iface

0.0.0.0         89.9.198.230    0.0.0.0         UG    0      0        0 wwan0

89.9.198.0      0.0.0.0         255.255.255.0   U     7      0        0 wwan0

129.241.166.0   0.0.0.0         255.255.255.0   U     9      0        0 wlan0

169.254.0.0     0.0.0.0         255.255.0.0     U     1000   0        0 wlan0

It seems like the last connected connection clears out the gateway of the old connections, and in the last case here, wwan gets the gateway and lower metric compared to the wwan that should be prioritized less than wifi...

Same if I connect first to 3G and then wifi:

marius@marius-T1005:~$ route -n

Kernel IP routing table

Destination     Gateway         Genmask         Flags Metric Ref    Use Iface

0.0.0.0         89.9.194.30     0.0.0.0         UG    0      0        0 wwan0

10.10.0.0       0.0.0.0         255.255.252.0   U     9      0        0 wlan0

89.9.194.0      0.0.0.0         255.255.255.0   U     7      0        0 wwan0

169.254.0.0     0.0.0.0         255.255.0.0     U     1000   0        0 wwan0

I would then expect wlan to be preferred as it is usually faster, more stable and cheaper when available.

--

Marius