On Tue, Jan 13, 2015 at 6:10 AM, Arnd Bergmann <arnd@xxxxxxxx> wrote: > When IPV4 support is disabled, we cannot call arp_send from > the bridge code, which would result in a kernel link error: > > net/built-in.o: In function `br_handle_frame_finish': > :(.text+0x59914): undefined reference to `arp_send' > :(.text+0x59a50): undefined reference to `arp_tbl' > > This makes the newly added proxy ARP support in the bridge > code depend on the CONFIG_INET symbol and lets the compiler > optimize the code out to avoid the link error. > Not sure how much sense to make CONFIG_BRIDGE depend on CONFIG_INET, at least CONFIG_BONDING does.
