The udhcpc script fails to properly set a default route when: - 'ip' is present ($have_bin_ip -eq 1) - there are 2 or more interfaces connected to the same network (e.g. ethernet + wifi on the same home LAN / same DHCP server)
In this case, when the first interface gets an address from DHCP (e.g. eth0), a default route is set correctly. When the second interface (e.g. wlan0) gets its address, 'ip route add' without 'dev $interface' sets the route on the other interface. The result looks like: # ip route default via 192.168.1.1 dev eth0 metric 5 default via 192.168.1.1 dev eth0 metric 10 # wrong dev here 192.168.1.0/24 dev eth0 scope link src 192.168.1.20 192.168.1.0/24 dev wlan0 scope link src 192.168.1.30 # The situation might go unnoticed until eth0 is disconnected, because only wlan0 is present but there is no route through wlan0. Fix by explicitly passing "dev $interface" to 'ip route add'. Note that all other 'ip' invocations already have "dev $interface" passed. Signed-off-by: Luca Ceresoli <[email protected]> --- meta/recipes-core/busybox/files/simple.script | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/meta/recipes-core/busybox/files/simple.script b/meta/recipes-core/busybox/files/simple.script index 6ed0293525c1..7bfa1526400f 100644 --- a/meta/recipes-core/busybox/files/simple.script +++ b/meta/recipes-core/busybox/files/simple.script @@ -59,7 +59,7 @@ case "$1" in metric=10 for i in $router ; do if [ $have_bin_ip -eq 1 ]; then - /SBIN_DIR/ip route add default via $i metric $metric + /SBIN_DIR/ip route add default via $i metric $metric dev $interface else /SBIN_DIR/route add default gw $i dev $interface metric $metric 2>/dev/null fi -- 2.25.0 -- _______________________________________________ Openembedded-core mailing list [email protected] http://lists.openembedded.org/mailman/listinfo/openembedded-core
