• David Ahern's avatar
    net: Evict neighbor entries on carrier down · 859bd2ef
    David Ahern authored
    When a link's carrier goes down it could be a sign of the port changing
    networks. If the new network has overlapping addresses with the old one,
    then the kernel will continue trying to use neighbor entries established
    based on the old network until the entries finally age out - meaning a
    potentially long delay with communications not working.
    This patch evicts neighbor entries on carrier down with the exception of
    those marked permanent. Permanent entries are managed by userspace (either
    an admin or a routing daemon such as FRR).
    Signed-off-by: default avatarDavid Ahern <dsahern@gmail.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
arp.c 35.8 KB